Learning Materials
Features
Discover
Chapter 4: Q. 6 (page 192)
6. What kind of plot is useful for deciding whether finding a regression line for a set of data points is reasonable?
The scatter plot is useful for deciding whether finding a regression line for a set of data points.
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
4.76 PCBs and Pelicans, Polychlorinated biphenyls (PCBs), industrial pollutants, are known to be carcinogens and a great danger to natural ecosystems. As a result of several studies, PCB production was banned in the United States in and by the Stockholm Convention on Persistent Organic Pollutants in . One study, published in by R. Risebrough, is titled "Effects of Environmental Pollutants Upon Animals Other Than Man" (Proceedings of the 6th Berkeley Symposium on Mathematics and Statistics, Vl, University of California Press, Pp. ). In that study, Anacapa pelican eggs were collected and measured for their shell thickness, in millimeters (mm), and concentration of PCBs, in parts per million (ppm). The data are on the Weiss Stats site.
a. Obtain a scatterplot for the data.
b. Decide whether finding a regression line for the data is reasonable. If so, then also do parts (c)-(f).
Shortleaf Mines. The ability to estimate the volume of a tree based on a simple measurement, such as the tree's diameter, is important to the lumber industry, ecologists, and conservationists. Data on volume, in cubic feet. and diameter at breast height, in inches, for shortlist pics were reported in C. Bruce and F. X. Schumacher's hopes Mensuration (New York: McGraw-Hill. ) and analyzed by A. C. Atkinson in the article "Transforming Both Sides of a Tree" (The Anarricas Slasisiciun, Vol, 48, PD. ), The data are presented on the WeissStats site.
a. Obtain a scatterplot for the dater.
h. Decide whether finding a depression lime for the data is reasonable. If so, then also do jurras (e) (f.
The linear correlation coefficient is also known by another name. what is it?
A positive linear relationship between two variables means that one variable tends to increase linearly as the other------
Gas Gurzlers. The data for gas mileage and engine displacement for vehicles from Exercise 4.78 are provided on the WeissStats site.
a. decide whether the 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 mo variables in question.
What do you think about this solution?
We value your feedback to improve our textbook solutions.
Explanations 
Textbooks 
Exams 
GCSE 
IGCSE 
AS 
A Level 
International A Level 
University Admissions Tests 
Flashcards 
Vaia AI 
Notes 
Study Plans 
Study Sets 
Find a job 
Find a degree 
Student Deals 
Magazine 
Mobile App