Algebra I IM Unit 3: Two-Variable Statistics Review

Front

What is the correlation coefficient?

Back

A number between -1 and 1 that describes the strength of a relationship.

Front

How are residuals calculated in regression analysis?

Back

By subtracting the predicted values from the actual values.

Front

What indicates a strong correlation in a scatter plot?

Back

Examining the pattern of the data points.

Front

What type of correlation exists between outside temperature and the amount of layers you wear?

Back

Negative correlation.

Front

What does a correlation coefficient of -0.6557 indicate?

Back

A moderate negative correlation between the variables.

Front

What is a scatter plot?

Back

A graph that shows the relationship between two quantitative variables.

Front

What does a positive correlation mean?

Back

As one variable increases, the other variable also increases.

Front

What does a negative correlation mean?

Back

As one variable increases, the other variable decreases.

Front

What is the range of values for a correlation coefficient?

Back

From -1 to 1.

Front

What does a correlation coefficient of 0 indicate?

Back

No correlation between the variables.