Describing Correlation

Which is the explanatory variable?

• Size in Carats

• Price

Which is the response variable?

• Hours of Sleep

• Test Score

Describe the correlation.

• strong positive

• weak positive

• no correlation

• weak negative

• strong negative

Describe the correlation.

• strong positive

• weak positive

• no correlation

• weak negative

• strong negative

What is the correlation coefficient of the regression line?

• 0.986

• 2527

• total length (cm) = 1.1forklength (cm) + 4.1

• 4.1

Given that the scatter diagram has a product moment correlation coefficient of 0.9, what can you conclude?

• There is a weak negative linear correlation between x and y

• There is a strong negative linear correlation between x and y

• There is a strong positive linear correlation between x and y

• There is a weak positive linear correlation between x and y

Which correlation coefficient best describes the correlation shown?

• 0

• -0.75

• -0.3

• 0.3

The correlation coefficient of the regression line is 0.986. What does that mean?

• There is a very strong, positive correlation between the variables.

• There is a very strong, negative correlation between the variables.

• There is a weak, negative correlation between the variables.

• As fork length increases, so does total length.

The correlation coefficient of this graph is closest to:

• 0.97

• 0.75

• -0.98

• 0.48

What correlation coefficient would be describe the correlation?

• 0

• -0.999

• 0.978

• 0.2