Simon Fraser University

Two-Sample Test for Proportions

In the Two-Sample Test for Proportions task, you can determine whether two probabilities are the same. The data analyzed in this example are taken from a study measuring the accuracy of two computer ...
Investopedia

Two-Tailed Test: Definition, Examples, and Importance in Statistics

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...
isixsigma on MSN

Making Sense of the Two-Sample T-Test: Supercharge Your Hypotheses Tests

The two-sample t-test is one of the most commonly used hypothesis tests in Six Sigma work. It is applied to compare the average difference between two groups. You use it to determine if the difference ...
Investopedia

T-Test: What It Is With Multiple Formulas and When to Use Them

This calculation can be used for hypothesis testing in statistics Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive ...
Simon Fraser University

Two-Sample z-Test for Population Proportions

This web calculator conducts a z-test for the difference between two populations' proportions. The calculator includes an explanation of inputs and outputs. This web calculator conducts a z-test for ...