Question

Find median
Сl
0-20
20-40
40-60
60-80
80-100
100-120
120 - 140
C.F. 6 , 14 , 24 , 36 , 42 , 47, 50
​

Answer 1

Answer:

mxmdmdmmdmfmfmmfmfnxmzmxm

Answer 2

Step-by-step explanation:

ClassInterval Frequency c.f.

0−20 6 6

20−40 8 14

40−60 10 24

60−80 12 36

80−100 6 42

100−120 5 47

120−140 3 50

N=50

Here, N=50, then

n/2=50/2=25

∴ Median class =60−80

We have, l=60,c.f=24,f=12 and h=20

Median=l+ (n/2-cf)×h

--------

f

soHere, N=50, then

n/2=50/2

=25

cf=24

median=l+(n/2-cf)×h=60+(25-24)×20=60+1.66=61.66

so 61.66 is the median

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