Sarthaks eConnect | Largest Online Education Community - Recent questions and answers in Statistics
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Managed by Sarthaks eConnecthow to calculate mode
https://www.sarthaks.com/1082264/how-to-calculate-mode
Statisticshttps://www.sarthaks.com/1082264/how-to-calculate-modeSat, 08 May 2021 21:53:59 +0000Linear programming
https://www.sarthaks.com/1081988/linear-programming
Minimise Z = 2x1 + 4x2<br />
<br />
Subject to x1 + x2 ≤ 14<br />
<br />
31+22 ≥ 30<br />
<br />
21+2 ≤ 18<br />
<br />
1, 2 ≥ 0.Statisticshttps://www.sarthaks.com/1081988/linear-programmingSat, 08 May 2021 10:11:49 +0000Fit a straight line trend by the method of least squares in the following data
https://www.sarthaks.com/1081684/fit-a-straight-line-trend-by-the-method-of-least-squares-in-the-following-data
Year production<br />
<br />
1984. 7<br />
<br />
1985. 10<br />
<br />
1986. 12<br />
<br />
1987. 14<br />
<br />
1988. 17<br />
<br />
1989. 24Statisticshttps://www.sarthaks.com/1081684/fit-a-straight-line-trend-by-the-method-of-least-squares-in-the-following-dataSat, 08 May 2021 07:20:30 +0000please help me there is just 15 minutes remains for the midterm
https://www.sarthaks.com/1080418/please-help-me-there-is-just-15-minutes-remains-for-the-midterm
<p>Determine the <u>phase</u>, the <u>quality</u> if applicable, and the <u>missing properties</u>. Give the details of your solution.</p><p></p><ol start="1" style="list-style-type:lower-alpha"><li>Water at 2.0MPa, 200<sup>o</sup>C u= ?, h=? v=?</li><li>R134a; 10<sup>o</sup>C, u=300kJ/kg v=?, h=? P=?</li><li>Air at 0. 2MPa, 47<sup>o</sup>C u=?, h=? v=?</li></ol>Statisticshttps://www.sarthaks.com/1080418/please-help-me-there-is-just-15-minutes-remains-for-the-midtermThu, 06 May 2021 08:32:01 +0000Answered: hi, can you help me please??
https://www.sarthaks.com/1080114/hi-can-you-help-me-please?show=1080147#a1080147
<p><span style="color:#000000">We have:</span></p><p><span style="color:#000000">q<sub>H</sub> = 250 kJ/kg , T<sub>H</sub> = 600 K, T<sub>L</sub> = 300 K, P<sub>3 </sub>= 75 kPa </span></p><p><span style="color:#000000">The states as</span></p><p><span style="color:#000000"><img alt="" src="https://www.sarthaks.com/?qa=blob&qa_blobid=1831102731629205284"></span></p><p><span style="color:#000000">1 : 600 K , 2: 600 K, 3: 75 kPa, 300 K 4: 300 K</span></p><p><span style="color:#000000">Since this is a Carnot cycle and we know the temperatures the efficiency is</span></p><p><span style="color:#000000">η = 1 − T<sub>L</sub>/T<sub>H</sub> = 1 - 300/600 = 0.5</span></p><p><span style="color:#000000">And the net work becomes </span></p><p><span style="color:#000000"> w<sub>NET</sub> = ηq<sub>H</sub> = 0.5 × 250</span></p><p><span style="color:#000000">= 125 kJ/kg</span></p><p><span style="color:#000000">The heat rejected is</span></p><p><span style="color:#000000"> q<sub>L</sub> = q<sub>H</sub> – w<sub>NET</sub> = 125 kJ/kg</span></p><p><span style="color:#000000">After heat rejection </span></p><p><span style="color:#000000">q<sub>L</sub> = RT<sub>L</sub> ln (v<sub>3</sub>/v<sub>4</sub>)</span></p><p><span style="color:#000000">v<sub>3</sub> = RT<sub>3</sub> / P<sub>3 </sub>= 0.287 x 300 / 75 = 1.148 m<sup>3</sup>/kg</span></p><p><span style="color:#000000">v<sub>4</sub> = v<sub>3</sub> exp(-q<sub>L</sub>/RT<sub>L</sub>) = 1.148 exp(−125/0.287 × 300) = 0.2688 m<sup>3</sup>/kg</span></p><p><span style="color:#000000">P<sub>4</sub> = RT<sub>4</sub> / v<sub>4</sub> = 0.287 × 300 / 0.2688 = 320 kPa</span></p>Statisticshttps://www.sarthaks.com/1080114/hi-can-you-help-me-please?show=1080147#a1080147Thu, 06 May 2021 03:59:30 +0000Answered: State three reasons in favour of international trade restrictions for a country like Kenya.
https://www.sarthaks.com/1078585/state-three-reasons-in-favour-of-international-trade-restrictions-for-country-like-kenya?show=1078622#a1078622
<p><span style="color:#000000"><strong>1. Reduced dependence on your local market</strong></span></p><p><span style="color:#000000">Your home market may be struggling due to economic pressures, but if you go global, you will have immediate access to a practically unlimited range of customers in areas where there is more money available to spend, and because different cultures have different wants and needs, you can diversify your product range to take advantage of these differences.</span></p><p><span style="color:#000000"><strong>2. Increased chances of success</strong></span></p><p><span style="color:#000000">Unless you’ve got your pricing wrong, the higher the volume of products you sell, the more profit you make, and overseas trade is an obvious way to increase sales. In support of this, UK Trade and Investment (UKTI) claim that companies who go global are 12% more likely to survive and excel than those who choose not to export.</span></p><p><span style="color:#000000"><strong>3. Increased efficiency</strong></span></p><p><span style="color:#000000">Benefit from the economies of scale that the export of your goods can bring – go global and profitably use up any excess capacity in your business, smoothing the load and avoiding the seasonal peaks and troughs that are the bane of the production manager’s life. </span></p><p><span style="color:#000000"><strong>4. Increased productivity</strong></span></p><p><span style="color:#000000">Statistics from UK Trade and Investment (UKTI) state that companies involved in overseas trade can improve their productivity by 34% – imagine that, over a third more with no increase in plant. </span></p><p><span style="color:#000000"><strong>5. Economic advantage</strong></span></p><p><span style="color:#000000">Take advantage of currency fluctuations – export when the value of the pound sterling is low against other currencies, and reap the very real benefits. Words of warning though; watch out for import tariffs in the country you are exporting to, and keep an eye on the value of sterling. You don’t want to be caught out by any sudden upsurge in the value of the pound, or you could lose all the profit you have worked so hard to gain.</span></p><p><span style="color:#000000"><strong>6. Innovation</strong></span></p><p><span style="color:#000000">Because you are exporting to a wider range of customers, you will also gain a wider range of feedback about your products, and this can lead to real benefits. In fact, UKTI statistics show that businesses believe that exporting leads to innovation – increases in break-through product development to solve problems and meet the needs of the wider customer base. 53% of businesses they spoke to said that a new product or service has evolved because of their overseas trade.</span></p><p><span style="color:#000000"><strong>7. Growth</strong></span></p><p><span style="color:#000000">The holy grail for any business, and something that has been lacking for a long time in our manufacturing industries – more overseas trade = increased growth opportunities, to benefit both your business and our economy as a whole.</span></p>Statisticshttps://www.sarthaks.com/1078585/state-three-reasons-in-favour-of-international-trade-restrictions-for-country-like-kenya?show=1078622#a1078622Mon, 03 May 2021 04:16:46 +0000Prepare a series randomly and calculate mean diviation and standard deviation
https://www.sarthaks.com/1078590/prepare-a-series-randomly-and-calculate-mean-diviation-and-standard-deviation
Statisticshttps://www.sarthaks.com/1078590/prepare-a-series-randomly-and-calculate-mean-diviation-and-standard-deviationSun, 02 May 2021 17:35:49 +0000Explain any two circumstances under which devaluation of currency may not be effective as a measure of correcting a balance of payment deficit
https://www.sarthaks.com/1078584/explain-circumstances-devaluation-currency-effective-measure-correcting-balance-payment
Statisticshttps://www.sarthaks.com/1078584/explain-circumstances-devaluation-currency-effective-measure-correcting-balance-paymentSun, 02 May 2021 13:00:04 +0000The table represents values of Calculate: GDP, GNP, NNP at Market price and NNP at factor price
https://www.sarthaks.com/1078583/the-table-represents-values-of-calculate-gdp-gnp-nnp-at-market-price-and-nnp-at-factor-price
Particulars Amount (Kshs)<br />
Wages and salaries 500<br />
Income and rent 90<br />
Net interest 80<br />
Corporate profits 130<br />
Indirect taxes 120<br />
Subsidies 80<br />
Depreciation 110<br />
Net income from abroad 80Statisticshttps://www.sarthaks.com/1078583/the-table-represents-values-of-calculate-gdp-gnp-nnp-at-market-price-and-nnp-at-factor-priceSun, 02 May 2021 12:57:14 +0000Explain any three reasons why inflation is very harmful to Kenyan economy?
https://www.sarthaks.com/1078581/explain-any-three-reasons-why-inflation-is-very-harmful-to-kenyan-economy
Statisticshttps://www.sarthaks.com/1078581/explain-any-three-reasons-why-inflation-is-very-harmful-to-kenyan-economySun, 02 May 2021 12:38:53 +0000If X is a continuous r. v. with p.d.£. f(x) then f f(x)dx = ...
https://www.sarthaks.com/1077298/if-x-is-a-continuous-r-v-with-p-d-f-x-then-f-f-x-dx
Statisticshttps://www.sarthaks.com/1077298/if-x-is-a-continuous-r-v-with-p-d-f-x-then-f-f-x-dxThu, 29 Apr 2021 05:14:22 +0000Statistics find the reaction at A and B
https://www.sarthaks.com/1077212/statistics-find-the-reaction-at-a-and-b
beam AB, 8.5m long is hinged at A and has a roller support at B. the roller support is inclined at 45° to the horizontal find the reactions at A and B, if the loads action are as shown in figure belowStatisticshttps://www.sarthaks.com/1077212/statistics-find-the-reaction-at-a-and-bThu, 29 Apr 2021 03:01:23 +0000Profit and loss
https://www.sarthaks.com/1076950/profit-and-loss
<ol><li>A and B entered into partnership on April 1st 2015 without any agreement.they introduced capitals of 500000 and 300000 respectively on October firsy 2015 by a way of loan without interest agreement.at the end of year,43000 was the profit.partners didn't agree about interest and basis of division profit.how much profit or loss did A get?</li></ol>Statisticshttps://www.sarthaks.com/1076950/profit-and-lossWed, 28 Apr 2021 08:42:16 +0000for a certain distribution if Σ(x-15)=10, Σ(x-12)=0 and Σ(x-7)=8 than what will be the value of mean and why?
https://www.sarthaks.com/1075763/for-a-certain-distribution-if-x-15-10-x-12-0-and-x-7-8-than-what-will-be-the-value-of-mean-and-why
Statisticshttps://www.sarthaks.com/1075763/for-a-certain-distribution-if-x-15-10-x-12-0-and-x-7-8-than-what-will-be-the-value-of-mean-and-whyMon, 26 Apr 2021 11:19:22 +0000Answered: Difference between statistics and parameter is called---
https://www.sarthaks.com/1075184/difference-between-statistics-and-parameter-is-called?show=1075261#a1075261
<p><span style="color:#000000">The difference between a statistic and a parameter is that statistics describe a sample. A parameter describes an entire population. Censuses result in a parameter about the population.</span></p>Statisticshttps://www.sarthaks.com/1075184/difference-between-statistics-and-parameter-is-called?show=1075261#a1075261Mon, 26 Apr 2021 04:50:46 +0000Answered: Testing of hypothesis
https://www.sarthaks.com/1072780/testing-of-hypothesis?show=1074386#a1074386
<p><img alt="Testing of Hypothesis Steps" src="https://www.sarthaks.com/?qa=blob&qa_blobid=327514047640588987" style="height:194px; width:259px"> These are Some Steps of Hypothesis Testing</p>Statisticshttps://www.sarthaks.com/1072780/testing-of-hypothesis?show=1074386#a1074386Fri, 23 Apr 2021 08:20:15 +0000What is the probability that transferred ball is white?
https://www.sarthaks.com/1074085/what-is-the-probability-that-transferred-ball-is-white
Suppose there are two bags with first bag contains 3 white and 2 black balls, second bag contains 2 white and 4 black balls. One ball is transferred from Bag I to Bag II and then a ball is drawn from Bag II. It happens to be white. What is the probability that the transferred ball is white?Statisticshttps://www.sarthaks.com/1074085/what-is-the-probability-that-transferred-ball-is-whiteThu, 22 Apr 2021 13:43:46 +0000Answered: Data is simply the numerical results of any scientific:
https://www.sarthaks.com/1070844/data-is-simply-the-numerical-results-of-any-scientific?show=1071028#a1071028
<p><span style="color:#000000">Scientific Measurement</span></p>Statisticshttps://www.sarthaks.com/1070844/data-is-simply-the-numerical-results-of-any-scientific?show=1071028#a1071028Mon, 19 Apr 2021 07:31:43 +0000Find the correlation coefficient from the following data. X: 64 65 66 66 67 68 69 71 Y: 68 69 66 69 73 73 70 72
https://www.sarthaks.com/1070753/find-the-correlation-coefficient-from-the-following-data-66-66-67-68-69-71-68-69-66-69-73-73-70
Find the correlation coefficient from the following data.<br />
X: 64 65 66 66 67 68 69 71<br />
Y: 68 69 66 69 73 73 70 72Statisticshttps://www.sarthaks.com/1070753/find-the-correlation-coefficient-from-the-following-data-66-66-67-68-69-71-68-69-66-69-73-73-70Mon, 19 Apr 2021 05:02:59 +0000Answered: The mean of 5+19+15
https://www.sarthaks.com/1066296/the-mean-of-5-19-15?show=1067038#a1067038
Mean=(5+19+15)/3<br />
<br />
=39/3<br />
<br />
=13Statisticshttps://www.sarthaks.com/1066296/the-mean-of-5-19-15?show=1067038#a1067038Sat, 10 Apr 2021 17:35:49 +0000which of the following statements is always correct?
https://www.sarthaks.com/1063906/which-of-the-following-statements-is-always-correct
Statisticshttps://www.sarthaks.com/1063906/which-of-the-following-statements-is-always-correctMon, 05 Apr 2021 09:22:55 +0000Continuous random variables MCQ questions
https://www.sarthaks.com/1059157/continuous-random-variables-mcq-questions
Statisticshttps://www.sarthaks.com/1059157/continuous-random-variables-mcq-questionsTue, 30 Mar 2021 05:58:55 +0000Answered: What is an accounting Cycle
https://www.sarthaks.com/1056042/what-is-an-accounting-cycle?show=1056063#a1056063
<p><span style="color:#000000">he accounting cycle is a collective process of identifying, analyzing, and recording the accounting events of a company. It is a standard 8-step process that begins when a transaction occurs and ends with its inclusion in the financial statements.</span></p>Statisticshttps://www.sarthaks.com/1056042/what-is-an-accounting-cycle?show=1056063#a1056063Tue, 23 Mar 2021 12:40:40 +0000Understand the meaning and the applications of statistical inference and confidence interval
https://www.sarthaks.com/1054726/understand-the-meaning-and-the-applications-statistical-inference-confidence-interval
<p><img alt="" src="https://www.sarthaks.com/?qa=blob&qa_blobid=320814842080092135" style="height:1233px; width:600px"></p>Statisticshttps://www.sarthaks.com/1054726/understand-the-meaning-and-the-applications-statistical-inference-confidence-intervalSun, 21 Mar 2021 15:51:25 +0000In a game of ludo, a player needs 3 to win, what is the probability that he wins on he's third throw
https://www.sarthaks.com/1049207/in-a-game-of-ludo-player-needs-3-to-win-what-is-the-probability-that-he-wins-on-hes-third-throw
Statisticshttps://www.sarthaks.com/1049207/in-a-game-of-ludo-player-needs-3-to-win-what-is-the-probability-that-he-wins-on-hes-third-throwTue, 09 Mar 2021 22:16:19 +0000Test of hypothesis problems
https://www.sarthaks.com/1048484/test-of-hypothesis-problems
Statisticshttps://www.sarthaks.com/1048484/test-of-hypothesis-problemsTue, 09 Mar 2021 03:43:57 +0000what is the solution?
https://www.sarthaks.com/1045741/what-is-the-solution
The system of gears B and C take out power 150 and 175 hp respectively from a motor A that has 325hp, Find the shaft dimeter if the allowable shear stress is 6250 psi and the angle of twist between gear C and motor is 2 degree. Let G=11.5 x 106 psi?Statisticshttps://www.sarthaks.com/1045741/what-is-the-solutionTue, 02 Mar 2021 17:25:54 +0000Answered: Division of a line segment
https://www.sarthaks.com/1044918/division-of-a-line-segment?show=1044937#a1044937
<p><span style="color:#000000">Search Results Featured snippet from the web A line segment can be divided into 'n' equal parts, where 'n' is any natural number. For example; a line segment of length 10 cm is divided into two equal parts by using a ruler as, Mark a point 5 cm away from one end. 10 cm is divided into two 5 cm line segments.</span></p>Statisticshttps://www.sarthaks.com/1044918/division-of-a-line-segment?show=1044937#a1044937Sun, 28 Feb 2021 12:17:01 +0000Calculate Karl Pearson’s Coefficient of Correlation from the following data. x 11 10 9 8 7 6 5 y 20 18 12 8 10 5 4
https://www.sarthaks.com/1043415/calculate-karl-pearsons-coefficient-of-correlation-from-the-following-data-11-10-20-12-10
Calculate Karl Pearson’s Coefficient of Correlation from the following data. <br />
<br />
x - 11 10 9 8 7 6 5 <br />
<br />
y - 20 18 12 8 10 5 4Statisticshttps://www.sarthaks.com/1043415/calculate-karl-pearsons-coefficient-of-correlation-from-the-following-data-11-10-20-12-10Tue, 23 Feb 2021 19:49:27 +0000Answered: In a state there are 30 medical colleges, 10 dental colleges and 50 engineering colleges
https://www.sarthaks.com/1043263/in-a-state-there-are-30-medical-colleges-10-dental-colleges-and-50-engineering-colleges?show=1043286#a1043286
<p><span style="color:#000000">Table showing the Medical, Engineering and Dental colleges run by Government, Private Aided and Private Unaided colleges in a State</span></p><p><span style="color:#000000"><img alt="" src="https://www.sarthaks.com/?qa=blob&qa_blobid=12375366033590710048" style="height:108px; width:600px"></span></p>Statisticshttps://www.sarthaks.com/1043263/in-a-state-there-are-30-medical-colleges-10-dental-colleges-and-50-engineering-colleges?show=1043286#a1043286Tue, 23 Feb 2021 04:02:28 +0000engineering dynamic
https://www.sarthaks.com/1043282/engineering-dynamic
An enemy fighter jet plane was detected by radar, approaching from beyond Mt. Ophir as shown in Figure Q1. The fighter jet pilot maintains low level flying at 800m above ground with a constant speed of 0.5 mach. R is the horizontal distance from the fighter jet plane to the artillery unit. At an instant when R = 3000 m, an artillery personnel fired a projectile at time, t0=0 s, and at 45° from horizontal ground. The artillery shell, with initial speed of u=1600 m/s crosses the elevation of 800m at time, t1 and t2 in projectile motion from the moment it was fired.<br />
Figure Q1<br />
a) Calculate the time t1 and t2.<br />
(10 marks)<br />
b) Determine the location of fighter jet at t1 and t2 (the horizontal distance from artillery).<br />
(5 marks)<br />
c) In your own words explain whether the artillery shell will hit the fighter jet. What is your advice to the artillery army unit?<br />
(10 marks)Statisticshttps://www.sarthaks.com/1043282/engineering-dynamicTue, 23 Feb 2021 03:38:48 +0000Answered: Write the range of a hyper geometric distribution?
https://www.sarthaks.com/1039985/write-the-range-of-a-hyper-geometric-distribution?show=1042886#a1042886
<p>The hypergeometric distribution is a probability distribution that's very similar to the binomial distribution. In fact, the binomial distribution is a very good approximation of the hypergeometric distribution as long as you are sampling <strong>5% or less of the population.</strong></p>Statisticshttps://www.sarthaks.com/1039985/write-the-range-of-a-hyper-geometric-distribution?show=1042886#a1042886Sat, 20 Feb 2021 16:14:00 +0000Hungarian algoritham
https://www.sarthaks.com/1041507/hungarian-algoritham
<p><img alt="" src="https://www.sarthaks.com/?qa=blob&qa_blobid=9235893732446394660" style="height:222px; width:600px"></p>Statisticshttps://www.sarthaks.com/1041507/hungarian-algorithamSat, 13 Feb 2021 20:17:31 +0000Calculate Karl Pearson’s Coefficient of Correlation from the following data. x 11 10 9 8 7 6 5 y 20 18 12 8 10 5 4
https://www.sarthaks.com/1041116/calculate-karl-pearsons-coefficient-of-correlation-from-the-following-data-11-10-20-12-10
I want the solution for this question that i have asked.Statisticshttps://www.sarthaks.com/1041116/calculate-karl-pearsons-coefficient-of-correlation-from-the-following-data-11-10-20-12-10Sat, 13 Feb 2021 05:26:19 +0000calculate this by borely's method
https://www.sarthaks.com/1040596/calculate-this-by-borelys-method
<table border="0" cellpadding="0" style="width:223px; border-spacing: 0px;"><tbody><tr><td>Marks </td><td>F </td></tr><tr><td>0-10</td><td>5</td></tr><tr><td>10-20</td><td>10</td></tr><tr><td>20-30</td><td>25</td></tr><tr><td>30-40</td><td>40</td></tr><tr><td>40-50</td><td>26</td></tr><tr><td>50-60</td><td>11</td></tr><tr><td>60-70</td><td>3</td></tr></tbody></table>Statisticshttps://www.sarthaks.com/1040596/calculate-this-by-borelys-methodFri, 12 Feb 2021 06:37:21 +0000calculate karl pearson's coefficient of skewness
https://www.sarthaks.com/1040241/calculate-karl-pearsons-coefficient-of-skewness
<p>The following are the marks of 150 students in an examination.calculate karl pearson's coefficient of skewness </p><table border="0" cellpadding="0" style="width:1280px"><tbody><tr><td><p>Marks</p></td><td><p>No. of Students</p></td></tr><tr><td><p>0-10</p></td><td><p>20</p></td></tr><tr><td><p>10-20</p></td><td><p>10</p></td></tr><tr><td><p>20-30</p></td><td><p>40</p></td></tr><tr><td><p>30-40</p></td><td><p>0</p></td></tr><tr><td><p>40-50</p></td><td><p>15</p></td></tr><tr><td><p>50-60</p></td><td><p>20</p></td></tr><tr><td><p>60-70</p></td><td><p>15</p></td></tr><tr><td><p>70-80</p></td><td><p>10</p></td></tr><tr><td><p>80-90</p></td><td><p>30</p></td></tr></tbody></table>Statisticshttps://www.sarthaks.com/1040241/calculate-karl-pearsons-coefficient-of-skewnessThu, 11 Feb 2021 09:20:37 +0000calculate karl pearson's coefficient of skewness
https://www.sarthaks.com/1040231/calculate-karl-pearsons-coefficient-of-skewness
The following are the marks of 150 students in an examination.calculate karl pearson's coefficient of skewness<br />
<br />
Marks- 0-10, 10-20, 20-30, 30-40, 40-50, 50-60, 60-70, 70-80, 80-90.<br />
<br />
No of students- 20,10, 40, 0, 15, 20, 15, 10, 30.Statisticshttps://www.sarthaks.com/1040231/calculate-karl-pearsons-coefficient-of-skewnessThu, 11 Feb 2021 08:54:24 +0000Answered: Write the Parameter of a Bernoulli distribution
https://www.sarthaks.com/1039984/write-the-parameter-of-a-bernoulli-distribution?show=1040005#a1040005
<p><span style="color:#000000">In the typical application of the Bernoulli distribution, a value of 1 indicates a "success" and a value of 0 indicates a "failure", where "success" refers that the event or outcome of interest. The parameter p in the Bernoulli distribution is given by the probability of a "success".</span></p>Statisticshttps://www.sarthaks.com/1039984/write-the-parameter-of-a-bernoulli-distribution?show=1040005#a1040005Thu, 11 Feb 2021 04:09:13 +0000Answered: Write a merit of method least squares for measuring Trend.
https://www.sarthaks.com/1039982/write-a-merit-of-method-least-squares-for-measuring-trend?show=1040004#a1040004
<p><span style="color:#000000">The method of least squares gives the most satisfactory measurement of the secular trend in a time series when the distribution of the deviations is approximately normal. The least-squares estimates are unbiased estimates of the parameters.</span></p>Statisticshttps://www.sarthaks.com/1039982/write-a-merit-of-method-least-squares-for-measuring-trend?show=1040004#a1040004Thu, 11 Feb 2021 04:07:47 +0000Answered: Define secular trend.
https://www.sarthaks.com/1039981/define-secular-trend?show=1040003#a1040003
<p><span style="color:#000000">A secular trend is a variable that evidences a consistent pattern within a given period of time. It is a statistical tendency that can be easily identified and it is not subject to seasonal or cyclical effects.</span></p>Statisticshttps://www.sarthaks.com/1039981/define-secular-trend?show=1040003#a1040003Thu, 11 Feb 2021 04:06:38 +0000Answered: Explain the characteristics of Operations Research.
https://www.sarthaks.com/1039547/explain-the-characteristics-of-operations-research?show=1039568#a1039568
<p><span style="color:#000000"><strong>Characteristics of Operations research:</strong></span></p><p><span style="color:#000000"><strong>1. Decision making</strong>: Operations research is a decision science which helps management to make better decisions.</span></p><p><span style="color:#000000"><strong>2. Use of Information Technology (IT)</strong>: O.R. often requires a computer to solve the complex mathematical model or to perform a large number of computations that ae involved. Use of digital computer has become an integral part of the operations research approach to decision making.</span></p><p><span style="color:#000000"><strong>3. Quantitative solution</strong>: Operations research provides the managers with a quantitative basis for decision making. OR attempts to provide a systematic and rational approach for quantitative solution to the various managerial problems.</span></p><p><span style="color:#000000"><strong>4. Human factors: </strong>In deriving quantitative solution we do not consider human factors, which doubtlessly plays a great role in the problems. So study of the OR is incomplete without a study of human factors.</span></p><p><span style="color:#000000"><strong>5. System orientation</strong>: O.R. study the situation or problem as a whole. This means that an activity by any part of an organization has some effect on the activity of every other part. The optimum result of one part of a system may not be the optimum for some other part. Therefore, to evaluate a decision, one must identify all possible interactions and determine their impact on the organization as a whole.</span></p><p><span style="color:#000000"><strong>6. Scientific approach</strong>: O.R. uses scientific methods to solve the problems. Most of the scientific studies such as chemistry, physics, biology etc. can be carried out in the laboratories, without much interference form the outside world. Bust same is not true in the systems under study by OR teams. So, OR is an formalized process of reasoning. Under OR the problem is to be analysed ad defined clearly. Observations are made under different conditions to study the behavior of the system. On the basis of these observations a hypothesis describing how the various factors involved are believed to interact and the best solution to the problem is formulated. To test the hypothesis experiment is designed and executed. Observations are made and measurement s are recorded. Finally results of the experiments are studied and the hypothesis is accepted or rejected. So, OR is the use of scientific method to solve the problem under study.</span></p><p><span style="color:#000000"><strong>7. Inter-disciplinary team approach</strong>: O.R. is performed by a team of scientists whose individual members have been drawn from different scientific and engineering disciplines. For example, one may find a mathematician, statistician, physicist, psychologist, economist and an engineer working together on an OR problem.</span></p><p><span style="color:#000000"><strong>8. Uncovering new problems</strong>: Solution of an OR problem may uncover a number of new problems. In order to derive the maximum benefit each one of them must be solved. OR is not effectively used if It is restricted to one shot problems only. In order to derive full benefits, continuity of research must be maintained.</span></p>Statisticshttps://www.sarthaks.com/1039547/explain-the-characteristics-of-operations-research?show=1039568#a1039568Tue, 09 Feb 2021 05:08:45 +0000Also find the maximum inventory ,manufacturing time and total time
https://www.sarthaks.com/1037826/also-find-the-maximum-inventory-manufacturing-time-and-total-time
Statisticshttps://www.sarthaks.com/1037826/also-find-the-maximum-inventory-manufacturing-time-and-total-timeThu, 04 Feb 2021 14:34:09 +0000How many possible outcomes of size n= 3 can be drawn from a population of size 12?
https://www.sarthaks.com/1036888/how-many-possible-outcomes-of-size-n-3-can-be-drawn-from-a-population-of-size-12
Statisticshttps://www.sarthaks.com/1036888/how-many-possible-outcomes-of-size-n-3-can-be-drawn-from-a-population-of-size-12Wed, 03 Feb 2021 06:01:17 +0000Construct a histogram for the following distribution
https://www.sarthaks.com/1036795/construct-a-histogram-for-the-following-distribution
Statisticshttps://www.sarthaks.com/1036795/construct-a-histogram-for-the-following-distributionTue, 02 Feb 2021 16:35:14 +0000Draw a frequency curve for the following
https://www.sarthaks.com/1036794/draw-a-frequency-curve-for-the-following
<p><span style="color:#000000">Draw a frequency curve for the following</span></p>Statisticshttps://www.sarthaks.com/1036794/draw-a-frequency-curve-for-the-followingTue, 02 Feb 2021 16:04:30 +0000E[a/b] = E[a] / E[b] true or false ? proving
https://www.sarthaks.com/1035682/e-a-b-e-a-e-b-true-or-false-proving
Statisticshttps://www.sarthaks.com/1035682/e-a-b-e-a-e-b-true-or-false-provingSun, 31 Jan 2021 21:08:22 +0000Answered: Microprocessors as switching devices are for which generation computers
https://www.sarthaks.com/1035609/microprocessors-as-switching-devices-are-for-which-generation-computers?show=1035633#a1035633
<p><span style="color:#000000">Microprocessors are used in the computers of fourth generation computers. Personal microcomputers were possible due to the microprocessors.</span></p>Statisticshttps://www.sarthaks.com/1035609/microprocessors-as-switching-devices-are-for-which-generation-computers?show=1035633#a1035633Sun, 31 Jan 2021 09:47:57 +0000Steel railroad 10m long are laid with the clearance of 3mm at a temperature of 15 deg. C. Assume alpha = 11.7x10^-6 per deg. C. and E = 200 GPa.
https://www.sarthaks.com/1034370/steel-railroad-long-laid-with-clearance-temperature-deg-assume-alpha-7x10-per-deg-and-200
Statisticshttps://www.sarthaks.com/1034370/steel-railroad-long-laid-with-clearance-temperature-deg-assume-alpha-7x10-per-deg-and-200Fri, 29 Jan 2021 06:39:20 +0000sets and venn diagrams
https://www.sarthaks.com/1032863/sets-and-venn-diagrams
A Survey of 600 workers in a plant indicated that 410 owned their own houses, 500 owned cars, 550 owned televisions, 410 owned cars and televisions, 340 owned cars and houses, 370 owned houses and television and 300 owned all three. Illustrate by a Venn diagram and prove that the above data is not correct. What set is empty?Statisticshttps://www.sarthaks.com/1032863/sets-and-venn-diagramsMon, 25 Jan 2021 20:44:53 +0000the principles and concepts of forecasting
https://www.sarthaks.com/1032862/the-principles-and-concepts-of-forecasting
<p>a) What is a time series? How would it be used to make predictions about emerging technological developments? <strong>(9 marks)</strong></p><p></p><p>b) Managers throughout the organization make forecasts on many different variables other than future demand, such as competitor strategies, regulatory changes, technological changes, processing times, supplier lead times, and quality losses. <strong><em>Forecasts</em></strong> are important to managing both <strong><em>processes</em></strong> and managing <strong><em>supply chains</em></strong>.</p><p></p><p>Using the principles and concepts of <strong><em>forecasting </em></strong>under Operations Research, <strong><em>detail-out</em></strong> the fundamental forecasting techniques that aid operations managers to achieve the aforementioned tasks. <strong>(16 marks)</strong></p><p></p>Statisticshttps://www.sarthaks.com/1032862/the-principles-and-concepts-of-forecastingMon, 25 Jan 2021 20:40:57 +0000