Module 2 Practice Questions (4)

Front

What is the relationship between eye color and birth order categorized as?

Back

case C -> C

Front

What does a correlation coefficient close to 1 indicate about the relationship between two variables?

Back

There is a strong positive relationship between the variables.

Front

Given a scatter plot, what does an r value of 0.934 indicate?

Back

There is a strong positive correlation between the two variables.

Front

How can the relationship between compensation offered to survey participants and completion rate be described?

Back

strong curvilinear

Front

What is the correlation coefficient of a dataset if r = -0.578?

Back

The dataset has a moderate negative correlation.

Front

Define correlation coefficient.

Back

A statistical measure that describes the strength and direction of a relationship between two variables.

Front

What does a correlation coefficient of 0 indicate?

Back

No correlation between the two variables.

Front

What is the difference between case C -> C and case Q -> Q?

Back

Case C -> C indicates a correlation between two categorical variables, while case Q -> Q indicates a correlation between two quantitative variables.

Front

What does a strong curvilinear relationship imply?

Back

The relationship between the variables is not linear and may change direction.

Front

What is the significance of a negative correlation coefficient?

Back

As one variable increases, the other variable tends to decrease.