Deck 30: Comparative Statistics

Question 1

The decision to reject or fail to reject the null hypothesis is based on the likelihood that the result of a test was due to chance.

Answer 1

True

Question 2

Nonparametric tests are typically used for ratio and interval variables with relatively normal distributions and responses.

Answer 2

False

Question 3

What statistical test could be used to compare the mean ages in five independent populations?

A) Independent samples t-test
B) Fisher's exact test
C) Chi-square test
D) Kruskal-Wallis H test

Answer 3

A

Question 4

Which of the following calculates the correlation between two binomial variables?

A) Spearman's rho
B) Kendall's tau
C) Phi coefficient
D) Cramér's V

Question 5

In comparative statistics, what type of error occurs when a test indicates a significant difference between two or more populations even though the null hypothesis is true?

A) Type 1 error
B) Type 2 error
C) Type 3 error
D) Type 4 error