Equations and Correlation Coefficient

What letter do we use to represent correlation coefficient?

• c

• r

• p

• h

Which value is the closest to the correlation coefficient for the data?

• – 0.93

• – 0.07

• 0.07

• 0.93

A scatter plot is shown. A student added the line, thinking it was the line of best fit for the data. Which correlation coefficient most accurately describes the data’s fit to a linear model?

• - 0.9

• - 0.5

• 0.5

• 0.9

Which value is the closest to the correlation coefficient for the data?

• -0.07

• -0.73

• 0.07

• .73

Which value best represents the correlation coefficient for the data?

• -0.09

• -.29

• -.92

• -.5

What correlation coefficient is represented in the data?

• r = .97

• r = 1

• r = -1

• r = -.97

What is the correlation coefficient for a perfect negative scatter plot?

• r = 1

• r = 0

• r = -1

• r = .5

Select all that apply regarding the scatter plot.

• r = -1

• perfect positive

• r = 1

• perfect negative

• r = 0

Would you say that this scatter plot represents a strong or weak correlation?

• strong

• weak

Tags

CCSS.HSF-LE.A.1B

What correlation coefficient best matches this graph?

• r = 0.06

• r = .5

• r = .95

• r = .7