Hi,

I am currently working through the sample size determination module in “python for data analysis”. When using the sample size calculator (https://s3.amazonaws.com/codecademy-content/courses/learn-hypothesis-testing/a_b_sample_size/index.html) I notice that it produces different results from many other online calculators for sample size.

I am wondering is there anywhere I can find out the formula that the sample size calculator in the course is using? and how to calculate the sample size manually?

Thanks

Ross