Question

1. Which of the following is NOT an accurate or true statement?

The notation used to denote the null hypothesis is H0

The null hypothesis typically posits no difference, no relationship, or no effect

When conducting statistical tests, we always assume the alternative hypothesis is true in the population

The alternative hypothesis always contradicts the null hypothesis

All of these statement are true

2. A(n) ____________ is a statistic that informs us about the strength, or magnitude, as well as the direction of the relationship between two variables.

chi-square

p-value

measure of association

critical value

expected frequency

3.You have a dataset from a random sample of U.S. adults and are analyzing two variables measured as follows:Education (0=less than high school; 1=completed high school; 2=some college or more) and Marijuana use in past year (0=never; 1=once; 2=twice; 3=three or more times). Which statistic is most appropriate for describing the strength of the relationship between these two variables?

Chi-square

Phi-coefficient

Lambda

Goodman and Kruskal's gamma

Yule's Q

4.You have a dataset from a random sample of U.S. adults and are analyzing two variables measured as follows:Education (0=less than high school; 1=completed high school; 2=some college or more) and Marijuana use in past year (0=never; 1=once; 2=twice; 3=three or more times). Which statistic is most appropriate for making an inference about the existence of a relationship between these two variables in the population?

Chi-square

Phi-coefficient

Cramer's V

Goodman and Kruskal's gamma

Yule's Q

Answer 1

1. All of these statement are true

2. Measures of association (Correlation)

3. Phi-coefficient (From contingency table)

4. Chi-square (Test of independence)