Matching Descriptions to Scatter Plots

Name: ______Matching Descriptions to Scatter Plots AP Statistics From Activity-Based Statistics

1. Match each of the five scatter plots to the description of its 2. For the nine points on the scatter plot below, r  .71 , and the regression line and correlation coefficient. The scales on the axes equation of the LSRL is yˆ  4.00  1.00x . of the scatter plots are the same.

9 a) r  0.83; yˆ  2.1  1.4x 8 7   ˆ   b) r 0.31; y 7.8 0.5x 6 c) r  0.96; yˆ  2.1  1.4x 5 4 d) r  0.83; yˆ  11.8  1.4x 3 e) r  0.41; yˆ  1.4  1.4x 2 1

1 2 3 4 5 6

A tenth point is added to the original nine. Match each of the points below with the correlation coefficient that would result if that point Scatter Plot 1 Scatter Plot 2 were added. Try not to calculate the new correlation coefficient, but rather reason out with r must go with each point.

Correlation coefficients:

-0.84 -0.70 0.02 0.22 0.71 0.73 0.96

a) (3, 7) Scatter Plot 3 Scatter Plot 4 b) (2, 6) c) (10, 0) d) (10, 6) e) (10, 14) f) (100, 0) g) (100, 6)

Scatter Plot 5