Scatterplots and Linear Regression

Scatterplots and Linear Regression

Open Ended

Give an example of when a scatterplot would be useful outside of the classroom.

Poll

Does this scatterplot have a positive or negative correlation?

• Positive

• Negative

Multiple Choice

Which correlation coefficient best matches the given scatterplot?

• r = 0.8

• r = - 0.8

• r = 0.08

• r = - 0.08

Open Ended

Estimate the correlation coefficient of the given scatterplot.

Multiple Select

What is the correlation coefficient and linear regression of the data set: (1,7) (2,4) (3,-1) (8,-9) (6,-3) (-1,10)

• r = .98

• r = .95

• r = .97

• y = -2.1x + 7.9

• y = 7.9x - 2.1