Chapter 4: Q.4.118 (page 189)
What is one purpose of the linear correlation coefficient?
The linear correlation coefficient is used to determine the magnitude and direction of a linear link between two variables.
Over 30 million students worldwide already upgrade their learning with Vaia!
All the tools & learning materials you need for study success - in one app.
Get started for free
PCBs and Pelicans. The data on shell thickness and concentration of PCBs for Anacapa pelican eggs from Exercise 4.76 are on the WeissStats site.
a. decide whether use of the linear correlation coefficient as a descriptive measure for the data is appropriate. If so, then also do parts (b) and (c).
b. obtain the linear correlation coefficient.
c. interpret the value of r in terms of the linear relationship between the two variables in question.
Shortleaf Pines. The data from Exercise 4.80 for volume, in cubic feet, and diameter at breast height, in inches, for shortleaf pines are on the WeissStats site.
Determine the linear correlation coefficient by formula and definition.
Home Size and Value. The data from Exercise 4.74 for home size (in square feet) and assessed value (in thousands of dollars) for the same homes as in Exercise 4.157 are on the WeissStats site.
a. decide whether use of the linear correlation coefficient as a descriptive measure for the data is appropriate. If so, then also do parts (b) and (c).
b. obtain the linear correlation coefficient.
c. interpret the value of in terms of the linear relationship between the mo variables in question.
Determine the linear correlation coefficient by formula and definition.
What do you think about this solution?
We value your feedback to improve our textbook solutions.
