Correlation, Linear Regression, Residuals Review

Front

What are predicted y-values in a scatter plot?

Back

Predicted y-values are found on the regression line.

Front

What happens to errors as study time increases?

Back

As study time increases, errors decrease.

Front

What does a correlation show about two variables?

Back

A correlation shows that two things are related.

Front

What does a correlation coefficient close to 1 indicate?

Back

It indicates a strong positive correlation between the variables.

Front

What type of correlation is described by the relationship between temperature and hot chocolate sales?

Back

Negative correlation.

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two quantitative variables.

Front

What is linear regression?

Back

Linear regression is a statistical method used to model the relationship between a dependent variable and one or more independent variables.

Front

What are residuals in linear regression?

Back

Residuals are the differences between the observed values and the values predicted by the regression model.

Front

What does a positive correlation indicate?

Back

A positive correlation indicates that as one variable increases, the other variable also increases.

Front

What does a negative correlation indicate?

Back

A negative correlation indicates that as one variable increases, the other variable decreases.