Question

Draw histograms for the following frequency distributions:

(i)

Class Interval	0 – 16	10 – 20	20 – 30	30 – 40	40 – 50	50 – 60
Frequency	12	20	26	18	10	6

(ii)

Class Interval	10 – 16	10 – 22	22 – 28	28 – 34	34 – 40
Frequency	15	23	30	20	16

(iii) 

Class Interval	30 – 39	40 – 49	50 – 59	60 – 69	70 – 79
Frequency	24	16	09	15	20

(iv) 

Class Interval	16	24	32	40	48	56	64
Frequency	8	12	15	18	25	19	10

Answer 1

Steps of construction:

(a) Taking suitable scales, mark class intervals on x-axis and frequency on y-axis.

(b)Construct rectangles with class intervals as bases and corresponding frequencies as heights.

Steps of construction:

(a) Taking suitable scales, mark class intervals on x-axis and frequency on y-axis.

(b) Construct rectangles with class intervals as bases and corresponding frequencies as heights.

Steps of construction:

(a) Convert the data into exclusive form.

(b) Taking suitable scales, mark class intervals on x-axis and frequency on y-axis.

(c) Construct rectangles with class intervals as bases and corresponding frequencies as heights.

Steps of construction:

(a) Convert the class marks into class intervals.

(b) Taking suitable scales, mark class intervals on x-axis and frequency on y-axis.

(c) Construct rectangles with class intervals as bases and corresponding frequencies as heights.