Statest Institute

When over two-thirds agreement of all people is needed, and research on 100 people indicates 75% people agree, do you think over 2/3 of real populatio …

When you see the result of the poll below, what do you think about it?Region A: approval 30% (100 samples)Region B: approval 40% (120 samples)Is there …

You can collect some data (sample). You can calculate the mean of them. But, it is still "samples' mean," not one of real population's.This ap …

When you find a difference in average monthly sales between two sales representative, how do you deal with the information?In this case, this app is u …

You researched average sales per month; it is 11 million dollars. Is it significantly different from 10 million dollars?In this situation, you can do …

This app can do McNemar Test (paired two groups' proportion test)免費玩McNemar Test (Paired 2 Groups) APP玩免費免費玩McNemar Test (Paired 2 Groups) AppMcNe …

How do you manage this situation?Partner: Look! this gadget gets 60% satisfaction!You: Oh, yes. But, is it reliable?You should be aware that questionn …