Question

Data collected on the depth of the Nile River and the speed at which the river travels are given in the table:

Depth	Speed (ft/sec)
0.7	1.55
2	1.11
2.6	1.42
3.3	1.39
4.6	1.39
5.9	1.14
7.3	0.91
8.6	0.59
9.9	0.59
10.6	0.41
11.2	0.22

Find r², and interpret the results.

a. 0.88; The least-squares regression line, given by ŷ = 1.68 − 0.12x, is a good fit for the data.

b.−0.94; The least-squares regression line, given by ŷ = 1.68 − 0.12x, is a good fit for the data.

c.0.88; The least-squares regression line, given by ŷ = −0.12 + 1.68x, is not a good fit for the data.

d.−0.94; The least-squares regression line, given by ŷ = −0.12 + 1.68x, is not a good fit for the data.

Answer 1