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All posts related to Statistics

Rency
Shared from CA - CPT Mock - 17 on Jun 07, 2014 5:39 PM

The mean salary for a group of 20 female workers is Rs. 5000 per month and that for a group of 30 male workers is Rs. 6000 per month. What is combined mean salary?

 
Rs. 5400
Rs. 5500
Rs. 5600
Rs. 5700
Please type your answer before submitting.

I mean [ (20x5000) (30x6000) ] / 50 = 5600

Anand Desai
Shared from CA - CPT Mock - 13 on Jun 03, 2014 7:36 PM

What is the standard deviation of 5, 5, 9, 9, 9, 10, 5, 10, 10?

 
4.50
8
Please type your answer before submitting.

8