Question

               In a regression setting the line picked to best represent the data is the

               a.            worst case scenario line.

               b.            best case scenario line.

               c.            least squares regression line.

               d.            most squares regression line.

Say that in a scatterplot all the data points lie on a straight line. The correlation coefficient for the data will be

a. 1

b. -1

c. 0

d. both answers a and b could be correct.

Say that all the data points in a scatterplot have no distinct shape or pattern. The correlation coefficient for the data will be close to

a. 1

b. -1

c. 0

d. both answers a and b could be correct.

Answer 1

1) In a regression setting the line picked to best represent the data is the

c) least squares regression line

2) Say that in a scatterplot all the data points lie on a straight line. The correlation coefficient for the data will be

Correlation coefficient r = 1 or -1

d) both answers a and b could be correct

3) Say that all the data points in a scatterplot have no distinct shape or pattern. The correlation coefficient for the data will be close to 0

Option C is correct