Two-sample t-tests are statistical tests used to compare the means of two populations. Also known as Student’s t-tests, their results are used to determine if there is a significant difference between ...

The data are provided in the Analyst Sample Library. To access this Analyst sample data set, follow these steps: The test of interest is whether the difference of the means is zero. This is the ...

Paired-samples designs are used frequently in educational and behavioral research. In applications where the response variable is quantitative, researchers are encouraged to supplement the results of ...