Which Test?

Question 1

which test would you use to compare two independent groups, with continuous, Normally distributed data?

Answer 1

Independent samples t-test

Question 2

which test would you use to compare two independent groups with continuous, but not Normally distributed data?

Answer 2

Mann-Whitney U

Question 3

which test would you use to compared two independent groups, with ordinal data?

Answer 3

Mann-Whitney U

or, Chi-squared test for trend

Question 4

which test would you use to compare two independent samples of nominal data with:
>2 categories
large sample
most expected frequencies >5

Answer 4

Chi-squared test

Question 5

which test would you use to compare two independent samples of binary data, with a large sample and all expected frequencies >5?

Answer 5

Comparison of two proportions
OR
Chi-Squared

Question 6

which test would you use to compare two independent samples of binary data, but without:
a large sample and all expected frequencies >5?

Answer 6

Chi-squared with Yates’ correction
OR
Fishers’ exact test

Question 7

which test would you use for paired, continuous, Normally distributed data?

Answer 7

paired t-test

Question 8

which test would you use for paired, continuous, but not Normally distributed data?

Answer 8

Wilcoxon matched pairs test

Question 9

which test would you use for paired, ordinal data?

Answer 9

Sign test or Wilcoxon matched pairs test

Question 10

which test would you use for paired, binary data?

Answer 10

McNemar’s test

Question 11

which test would you use for paired, nominal data with >2 categories?

Answer 11

trick question! consult statistician!