Question

The
median class of the following frequency
is,
following frequency distribution
class
frequency
0-5
7
5 - 10
12
10-15
9
15-20
21
20-25
35
25-6
6
30-35
1p
​

Answer 1

Answer:

c.I        fi       cf

0-5      7       7

5-10     12      19 ----cfo

10-15    9       28

15-20   21      49

20-25  35     84

     ∑fi = 84

therefore n = 84 and n/2 = 84/2 = 42

Given:

Median class = 15-----20

l = 15 , h = 5 , n = 84 , f = 21 , Cfo =  19

median  = l + $\frac{n/2-cfo}{f}$ × h

= 15 + $\frac{42-19}{21} *5$

= 15 + $\frac{23*5}{21}$

= 15 + $\frac{115}{21}$

= 15 + 5.47

=20.47

MArk me BRAINLIESt