correlation coefficient r

The value of the coefficient of correlation r lies between:

• 0 and 1

• -1 and 0

• -1 and +1

• -0.5 and +0.5

Correlation coefficients of -0.90 and +0.90 have equal strength

• True

• False

For an estimate to be reliable, .......

(choose all that apply)

• it is an extrapolation

• it is an interpolation

. ________measures the strength of the linear relationship between the dependent and the independent variable.

• Correlation Coeeficient

• Distance value

• Y Intercept

• Residual

• True

• False

• strong positive

• strong negative

• weak positive

• weak negative

Estimate the correlation coefficient for this scatterplot.

• r = 0.9

What correlation coefficient would be describe the correlation?

• 0

• -0.999

• 0.978

• 0.2

Which correlation coefficient best describes the correlation shown?

• 0

• -0.75

• -0.3

• 0.3

Estimate the correlation coefficient for this scatterplot.

• r = -0.89