Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
1.6k views
in Statistics by (26.4k points)
closed by

Check the properties of arithmetic mean for the example given below:

X 3 6 9 12 15

If the mean is increased by 2, then what happens to the individual observations.

1 Answer

+1 vote
by (26.1k points)
selected by
 
Best answer

Given number are 3, 6, 9, 12, 15

Arithmetic Mean 

If mean is increased by 2 then,

9 + 2 

\(\frac{Sum\,of\,observation}{5}\)

Sum of observations = 5 x 11 

= 55 

Difference in sum = 55 – 45 

= 10 

∴ Each number is increased by 2 if the mean is increased by 2.

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...