Correlation Coefficient

Estimate the correlation coefficient for this scatterplot.

• r = -0.9

• r = 1

• r = 0.9

• r = -1

Estimate the correlation coefficient

• r = 1

• r = -1

• r ≈ -0.8

• r ≈ 0.8

• r ≈ -0.5

Estimate the correlation coefficient

• r=-1

• r=1

• r=-0.5

• r=0.5

Estimate the correlation coefficient.

• r=0

• r=-1

• r=1

• r=2

Match the following correlation coefficients.

• strong positive

• 0.56

• weak positive

• -0.95

• strong negative

• 0.48

• weak negative

• -0.25

Estimate the correlation coefficient

• r= -0.9

• r= 0.9

• r=-0.5

• r=0.5

Determine the correlation coefficient of the given data.

• - .5477

• .1770

• .8956

• - .9463

What is most likely the correlation coefficient for this data set?

• r = -0.20

• r = -0.75

• r = 0.85

• r = 1.00

To convince his students to slow down, Coach Logan tracks the typing speed and the number of errors made from a few of his students. Calculate the correlation coefficient, r, of the data set. Round to THREE decimal places.

Mathematical Equivalence

ON

Select the correlation coefficients that represent weak relationships.

• -0.96

• -0.18

• 0

• 0.4136