DF Calculator DF Calculator Select Test Type One-Sample t-Test Two-Sample t-Test Chi-Square Goodness of Fit Chi-Square Independence One-Way ANOVA Sample Size (n) Sample Size 1 (nā) Sample Size 2 (nā) Number of Categories Rows Columns Number of Groups (k) Total Sample Size (N) Degrees of Freedom: ā Choose a test type and enter values to calculate degrees of freedom.