SOCIAL STATISTICS
Managing Data, Conducting Analyses, Presenting Results Fifth Edition
a test of statistical inference used to see if there is a statistically significant difference among three or more sample means
Analysis of Variance (ANOVA)
This tells you the row of the t-table to use when you’re conducting a t-test. It is the sum of the two groups’ sample sizes minus 2.
Degrees of freedom for a t-test
The distribution of sample mean differences resulting from the repeated taking of samples from two populations; it is the sampling distribution used in a t-test
Sampling distribution of sample mean differences