S.chand publication New Learning Composite mathematics solution of class 7 Chapter 15 Data Handling Exercise 15B

 Exercise 15B

Question 1

(a) 2, 3, 5, 7, 9

= median = 5

(b) 4, 8, 12, 16, 20, 24, 28, 32

= Median = $\frac{1}{2}(16+20)$

$=\frac{1}{2}\times  36$

= 18

(c) 33, 44, 51, 60, 61, 63

Median = 51

(d) 8, 10, 11, 13, 16, 17, 19, 22, 25, 31

Median $=\frac{1}{2}(16+17)$

$=\frac{1}{2}\times 33$

= 16.5

Question 2

10, 11, 13, 17 17, 18, 19, 20, 23, 25, 28, 29, 29, 30, 35

= Median = 20