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Chapter 4: Q. 4.2 (page 160)

Fill in the blank.

The graph of a linear equation with one independent variable is a _____.

Short Answer

Expert verified

The graph of a linear equation with one independent variable is a straight line.

Step by step solution

01

Given information

We need to find shape of graph of a linear equation with one independent variable.

02

Explanation

The graph of a linear equation with one independent variable is a straight line because it has a constant slope.

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Most popular questions from this chapter

6. What kind of plot is useful for deciding whether finding a regression line for a set of data points is reasonable?

12. In the context of regression analysis, what is an

a. outlier?

b. influential observation?

A value of rclose to -----suggests at most a weak linear relationship between the variables.

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 1979and by the Stockholm Convention on Persistent Organic Pollutants in 2001. One study, published in 1972 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. 443-463). In that study, 60Anacapa 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 Pines. The data from Exercise 4.80 for volume, in cubic feet, and diameter at breast height, in inches, for 70shortleaf pines are on the WeissStats site.

  1. 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).
  2. obtain the linear correlation coefficient
  3. interpret the value of rin terms of the linear relationship between the two variables in question.
See all solutions

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