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

This applet allows users to specify a hypothesized population proportion, sample proportion and sample size as well as an alternative hypothesis and significance ... the resulting z-score and the ...

A t-test measures the difference between the means of two samples. A t-test is an inferential statistical test used to determine if there is a significant ... sample. For example, statisticians ...

It's simple to use and best suited for small samples involving subjects, test groups, and between and among groups. ANOVA is like several two-sample ... significant differences among groups. The t ...