Unit #3 Review Stats CP

Front

What is a residual in the context of regression analysis?

Back

The difference between the observed response and the values predicted by the model.

Front

Back

4.5

Front

Back

-20

Front

What is the correlation between study time and test grades?

Back

Positive

Front

What does a 'correlation coefficient' close to 0 indicate?

Back

Little to no linear relationship.

Front

Define the term 'correlation coefficient'.

Back

A numerical measure of the strength and direction of a linear relationship between two variables.

Front

What does a positive correlation coefficient signify?

Back

As one variable increases, the other variable tends to also increase.

Front

What does a negative correlation coefficient signify?

Back

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

Front

What is the range of values for a correlation coefficient?

Back

The range is from -1 to 1.

Front

What does a correlation coefficient of 1 indicate?

Back

A perfect positive linear relationship.