stats Flashcards
What tests do you use for a difference between means?
Between means t-test Anova Friedman test Kruskal wallis test sign tests rank sum test
What tests do you use for differences between distributions?
Chi-square(for goodness of fit and independence)
What tests do you use for differences between variances?
F-test
parametric tests
What does a difference between means ask?
whether samples come from populations with different means
What do t-test compare
the means of two parametric samples
What does the sign test compare
two paired non-parametric samples
What does the friedman test compare
more than two non-parametric samples
What does the rank sum test compare?
the means of two non-parametric samples
What does the Kuskal wallis test compare?
more than two non-parametric non-paired samples
What does a regression look for?
a functional relationship between two continuous variables
What does a regression assume?
a change in x causes a change in y
