Ch 7 Correlations

Front

A perfect negative correlation has a correlation coefficient of ____.

Back

-1

Tags

CCSS.HSS.ID.B.5

Front

Estimate the value of r: -0.32, -0.85, 0.47, 0.73

Back

-0.85

Tags

CCSS.HSS.ID.C.8

Front

A perfect positive correlation has a correlation coefficient of ____.

Back

1

Tags

CCSS.HSS.ID.B.5

Front

Estimate the value of r: 0.03, -0.99, 0.79, -0.72

Back

-0.72

Front

Estimate the value of r: -0.36, -0.83, 0.99, 0.65

Back

0.65

Tags

CCSS.HSS.ID.C.8

Front

What does a correlation coefficient of 0 indicate?

Back

No correlation between the variables.

Tags

CCSS.HSS.ID.B.5

Front

What is the range of correlation coefficients?

Back

-1 to 1.

Tags

CCSS.HSS.ID.B.5

Front

What does a correlation coefficient of -0.5 indicate?

Back

A moderate negative correlation.

Tags

CCSS.HSS.ID.B.5

Front

What does a correlation coefficient of 0.9 indicate?

Back

A strong positive correlation.

Tags

CCSS.HSS.ID.B.5

Front

What is the purpose of calculating a correlation coefficient?

Back

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

Tags

CCSS.HSS.ID.B.5