Wages Rs. No. of labours
60 - 70. 5
50 - 60. 10
40 - 30. 20
30 - 20. 5
20 - 10. 3
Find the Median
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Step-by-step explanation:
Wages f CF
0−10 22 22
10−20 38 60
20−30 46 106
30−40 35 141
40−50 20 161
N=161
Here,
2
N
=
2
161
=80.5. Median class is 20−30.
Lower limit of the median class l=20
Frequency of the median class f=46
Cumulative frequency of the class preceding the median class m=60
Width of the class c=10
Median =l+
f
2
N
−m
×c
=20+
46
80.5−60
×10=20+
46
10
×20.5
=20+
46
205
=20+4.46=24.46
∴ Median =24.46
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