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Question

Calculate the mean of weekly wages from the following frequency distribution:

Wages
(in Rs.)
No. of workers
304010
405020
506040
607016
70808
80906

A
52
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B
43
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C
48
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D
56
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Solution

The correct option is D 56
Wages Class mark Frequency
(In Rs.) (x) (No. of workers)(f) fx
3040 35 10 350
4050 45 20 900
5060 55 40 2200
6070 65 16 1040
7080 75 8 600
8090 85 6 510
f=100 fx=5600
Mean =fxf=5600100=56

350641_287248_ans_9f2d623001ab47e3a90638b67f04ae42.png

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