0 IVs (population) Interval & Normal One Sample t-test Compares the sample mean to a hypothesized value Wikipedia SPSS Stata SAS R MathWorks JMP
VassarStats UCLA UCLA UCLA UCLA
GraphPad Laerd Laerd Purdue RExRepos
Reed NYU
Ordinal or Interval One Sample Median/Wilcoxon Signed Rank Test Compares the sample median to a hypothesized value Wikipedia SPSS Stata SAS R MathWorks JMP
VassarStats UCLA UCLA UCLA UCLA
GraphPad Reed Purdue RExRepos
Categorical (two categories) Binomial Test Compares the proportion of successes to a hypothesized value Wikipedia SPSS Stata SAS R JMP
GraphPad UCLA UCLA UCLA UCLA
Reed RExRepos
Categorical Chi-square Goodness of Fit Compares observed proportions to hypothesized proportions Wikipedia SPSS UCLA* SAS R MathWorks JMP
StatSoft UCLA UCLA UCLA UCLA
VassarStats Laerd Reed Purdue RExRepos
Stat Trek StatTutorials
1 IV with 2 levels (independent groups) Interval & Normal Two Independent Sample T-test Compares difference between the means of two independent variables Wikipedia SPSS Stata SAS R MathWorks JMP
StatSoft UCLA UCLA UCLA UCLA
VassarStats Laerd Laerd Purdue RExRepos
GraphPad Norusis Reed StatTutorials NYU
Stat Trek
Ordinal or Interval Wilcoxon-Mann Whitney/Wilcoxon Rank Sum Test Compares difference between means of two independent variables when the dependent variable is not normally distributed Wikipedia SPSS Stata SAS R MathWorks JMP
VassarStats UCLA UCLA UCLA UCLA
GraphPad Laerd Reed Purdue RExRepos
NYU
Categorical Chi-square Test Examines relationship between two categorical variables Wikipedia SPSS Stata SAS R MathWorks JMP
StatSoft UCLA UCLA UCLA UCLA
VassarStats Laerd Reed Purdue NYU
Penn State StatTutorials
Fisher's Exact Test Examines relationship between two categorical variables when at least one of the expected cell counts is less than 5 Wikipedia SPSS Stata SAS R MathWorks JMP
StatSoft UCLA UCLA UCLA UCLA
VassarStats Purdue
StatTutorials
1 IV with 2 or more levels (independent groups) Interval & Normal One-way ANOVA (Analysis of Variance) Compares difference in means across one variable with two or more groups Wikipedia SPSS Stata SAS R MathWorks JMP
Laerd UCLA UCLA UCLA UCLA
StatSoft Laerd Laerd Purdue RExRepos
VassarStats Reed StatTutorials NYU
GraphPad
Ordinal or Interval Kruskal Wallis Compares difference across means of an ordinal or interval variable across one independent variable with at least two groups Wikipedia SPSS Stata SAS R MathWorks JMP
VassarStats UCLA UCLA UCLA UCLA
GraphPad Laerd Laerd Purdue RExRepos
Reed
Categorical Chi-square Test Examines relationship between two categorical variables Wikipedia SPSS Stata SAS R MathWorks JMP
StatSoft UCLA UCLA UCLA UCLA
VassarStats Laerd Reed Purdue NYU
Penn State StatTutorials
1 IV with levels (dependent/matched groups) Interval & Normal Paired T-test Compares difference between two dependent/matched variables Wikipedia SPSS Stata SAS R MathWorks JMP
StatSoft UCLA UCLA UCLA UCLA
VassarStats Laerd Laerd Purdue RExRepos
GraphPad Reed StatTutorials NYU
Ordinal or Interval Wilcoxon Signed Rank Test Compares difference between two dependent/matched variables when the difference is ordinal but not interval/normal Wikipedia SPSS Stata SAS R MathWorks JMP
VassarStats UCLA UCLA UCLA UCLA
Laerd Reed Purdue RExRepos
Categorical McNemar's Test Compares difference between proportions when the variables are matched/dependent Wikipedia SPSS Stata SAS R JMP
StatSoft UCLA UCLA UCLA UCLA
VassarStats Laerd Purdue RExRepos
GraphPad
1 IV with 2 or more levels (dependent/matched groups) Interval & Normal One-way Repeated Measures ANOVA Compares difference in means across one independent variable with two or more dependent/related groups Wikipedia SPSS Stata SAS R MathWorks JMP
Laerd UCLA UCLA UCLA UCLA
StatSoft Laerd Laerd StatTutorials RExRepos
VassarStats Reed
GraphPad
Ordinal or Interval Friedman Test Compares difference in means across an ordinal independent variable with two or more dependent/related groups Wikipedia SPSS SAS R MathWorks JMP
VassarStats UCLA UCLA UCLA UCLA
GraphPad Laerd RExRepos
Categorical Repeated Measures Logistic Regression Predicts group membership of a binary dependent outcome based off of multiple independent variables with dependent/related measurements SPSS Stata SAS R
UCLA UCLA UCLA UCLA
2 or more IVs (independent groups) Interval & Normal Two-way (N-way/Factorial) ANOVA Compares difference in means across two or more independent variables Wikipedia SPSS Stata SAS R MathWorks (Two-way) JMP
StatSoft UCLA UCLA UCLA UCLA MathWorks (N-way)
VassarStats Laerd Laerd UCLA RExRepos
GraphPad Reed Purdue
Ordinal or Interval Ordered Logistic Regression Predicts the value of an ordinal dependent variable based off of a combination of one or more independent variables Wikipedia SPSS Stata SAS R JMP
UCLA UCLA UCLA UCLA
UCLA UCLA UCLA RExRepos
Laerd Princeton
Norusis
Categorical Factorial Logistic Regression Predicts group membership of a binary dependent variable based off a combination of two or more independent variables SPSS Stata SAS R
UCLA UCLA UCLA UCLA
1 Interval IV Interval & Normal Correlation (Pearson) Examines strength of a linear association between two continuous variables Wikipedia SPSS Stata SAS R MathWorks JMP
Laerd UCLA UCLA UCLA UCLA
StatSoft UCLA UCLA UCLA NYU
Laerd Laerd StatTutorials
Simple Linear Regression Predicts the value of an interval dependent variable based off of the value of an interval or categorical independent variable Wikipedia SPSS Stata SAS R MathWorks JMP
StatSoft UCLA UCLA UCLA UCLA
Stat Trek Laerd Laerd Purdue RExRepos
StatTutorials NYU
Ordinal or Interval Correlation (Spearman) Examines strength of association between two ordinal or interval variables Wikipedia SPSS Stata SAS R MathWorks JMP
Laerd UCLA UCLA UCLA UCLA
StatSoft Laerd Laerd StatTutorials
Categorical Simple Logistic Regression Predicts the probability of group membership of a binary dependent variable based off of one independent interval variable Wikipedia SPSS Stata (logit) SAS R MathWorks JMP
StatSoft UCLA Stata (logistic) UCLA UCLA
Laerd UCLA StatTutorials RExRepos
SAGE NYU
1 or more Interval IVs and/or 1 or more Categorical IVs Interval & Normal Multiple Regression Predicts the value of an interval dependent variable based off of a linear combination of two or more interval or categorical independent variables Wikipedia SPSS Stata SAS R MathWorks JMP
StatSoft UCLA UCLA UCLA UCLA
UCLA UCLA UCLA RExRepos
Laerd Laerd Purdue NYU
Princeton
ANCOVA (Analysis of Covariance) Compares difference in means across at least one categorical variable and at least one interval variable Wikipedia SPSS Stata SAS R MathWorks JMP
StatSoft UCLA UCLA UCLA UCLA
VassarStats Laerd Reed RExRepos
Categorical Multiple Logistic Regression Predicts the probability of group membership of a binary dependent variable based off of a linear combination of independent interval or categorical variables Wikipedia SPSS Stata (logit) SAS R MathWorks JMP
StatSoft UCLA Stata (logisitc) UCLA UCLA
UCLA UCLA UCLA UCLA
Laerd UCLA
SAGE
Discriminant Analysis (predictive) Predicts group membership of a categorical variable based off of a linear combination of independent interval variables Wikipedia SPSS SAS R MathWorks JMP
StatSoft UCLA UCLA RExRepos
UCLA UCLA UCLA
SAGE Penn State