RM2 Exam 3 Review

A ___ is conducted to compare a sample mean to a known population mean.

• one-samples t-test

• independent samples t-test

• chi-square goodness of fit

• correlation

The _____ tells you the average distance between predicted Y and actual Y.

• y-intercept

• standard error of the estimate

• error variance

• coefficient of determination

A ___ tells you about the relationship between two continuous variables.

• Pearson's correlation

• Point biserial correlation

• Spearman's rho

• Chi-square test of independence

If I want to know the impact of coffee on academic performance, what's my independent variable?

• grades

• the classroom

• the students

• coffee

This is the formula for which statistical test?

• One-samples t-test

• Pearson's correlation

• Independent samples t-test

• Chi-square goodness of fit

If you measure a group before and after you exposure them to an IV, you are using a ___ design.

• between groups

• correlational

• within-participants

• descriptive

This scatter plot shows what type of correlational relationship?

• Positive

• Negative

• Curvilinear

• No relationship

A ___ tells you about the relationship between two categorical variables.

• Pearson's correlation

• Point biserial correlation

• Spearman's rho

• Chi-square test of independence

In Jamvoi, the _____ tells you if your test is significant.

• test statistic

• p-value

• critical value

• alpha

____ allows you to test if the mean of a variable is different between two groups.

• one-samples t-test

• independent samples t-test

• Pearson's correlation

• Chi-square test of independence