Question

After settlement, the average weekly wage in a factory had increased from Rs. 8 to 12

and standard deviation had increased from Rs. 1 to 1.5. The wages have become

higher and more uniform, after settlement. Comment.​

Answer 1

Given : After settlement, the average weekly wage in a factory had increased from Rs. 8 to 12  and standard deviation had increased from Rs. 1 to 1.5.  

To find : Authenticity of statement : wages have become  higher and more uniform, after settlement.

Solution:

Coefficient of Variation = (Standard deviation /Mean) * 100 %

Earlier Average weekly wages = 8

Mean = 8

Standard Deviation = 1

Coefficient of Variation   = (1/8)*100  = 12.5 %

After settlement,  Average weekly wages = 12

Mean = 12

Standard Deviation = 1.5

Coefficient of Variation   = (1.5/12)*100  = 12.5 %

12 > 8

Hence wages have become  higher  is Correct

Coefficient of Variation   is same

hence no impact on uniformity

more uniform  is not correct

become  higher  is Correct , more uniform  is not correct

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Answer 2

Step-by-step explanation:

see the attached image above

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