Hi,

I would like your suggestions on calculation of Sample Size.

Attached is a sample spreadsheet that has 4 columns. Details of the first 2 columns will be provided and based on the provided data we will need to research and enter the appropriate findings in the Third column. The fourth is a Confidence level where in it needs to be answered by a Yes or a No. Its either they are confident in their research or they are not confident.

There could be thousands of such data that needs to be researched. My question here is how do we determine the Best sample size that needs to be selected to perform a QA and get optimized results.

Thanks,

Krishna Murthy CHVG

SSD.xls

Dear Krishna,

 

I see that you completed your BB post you asked this question. The BB training would have answered this question for you. However, for everyone's benefit, in order to determine sample size, the following are the pre-requisites:

 

1) What is the hypothesis being tested (what do you want to ascertain with this sampled data)

2) Level of Significance and Power of the Test

 

In the example that you have provided,  what are you trying to test using this data is not clear. If you could provide more clarity, I would be able to guide further.