# Question

Exercise 4.141.

a. Construct a scatterplot for the data.

b. Decide whether using the rank correlation coefficient is reasonable.

c. Decide whether using the linear correlation coefficient is reasonable.

d. Find and interpret the rank correlation coefficient.

a. Construct a scatterplot for the data.

b. Decide whether using the rank correlation coefficient is reasonable.

c. Decide whether using the linear correlation coefficient is reasonable.

d. Find and interpret the rank correlation coefficient.

## Answer to relevant Questions

y = 6 − 7x a. Find the y-intercept and slope. b. Determine whether the line slopes upward, slopes downward, or is horizontal, without graphing the equation. c. Use two points to graph the equation. y = −3x a. Find the y-intercept and slope. b. Determine whether the line slopes upward, slopes downward, or is horizontal, without graphing the equation. c. Use two points to graph the equation. 0 and −0.5 a. Determine whether it slopes upward, slopes downward, or is horizontal, without graphing the equation. b. Find its equation. c. Use two points to graph the equation. Regarding the criterion used to decide on the line that best fits a set of data points, a. What is that criterion called? b. Specifically, what is the criterion? a. Find the regression equation for the data points. b. Graph the regression equation and the data points.Post your question

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