Math, asked by ahmadzishan44, 6 months ago


Find the median of the following data
mark obtained 20/29/28|33|42|38|43|25 Total
Wor
of 이
students 6 28|24|15|2|ul
201100​

Answers

Answered by nishkagm4
0

Answer:

Marks No of students fi cf

0−7 3 3

7−14 4 7

14−21 7 14

21−28 11 25

28−35 0 25

35−42 16 41

42−49 9 50

Sum =50

Where cf= cumulative frequency

Median =L+

f

(

2

N

−cf)

Here:

N=50

N/2=25

Here cumulative frequency is 25

Median class =21−28

So, L=21, h=7, f=11 and

cf=cf of preceding class i.e 14

Substitute all the value in the above formula, we get

Median =21+{7×(25−14)/11}

=28

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