# Question

Polychlorinated biphenyls (PCBs), industrial pollutants, are known to be a great danger to natural ecosystems. In a study by R. W. Risebrough titled "Effects of Environmental Pollutants Upon Animals Other Than Man" (Proceedings of the 6th Berkeley Symposium on Mathematics and Statistics, VI, University of California Press, pp. 443-463), 60 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 WeissStats CD.

a. Obtain a scatterplot for the data.

b. Decide whether finding a regression line for the data is reasonable.

a. Obtain a scatterplot for the data.

b. Decide whether finding a regression line for the data is reasonable.

## Answer to relevant Questions

Does a higher state per capita income equate to a higher per capita beer consumption? From the document Survey of Current Business, published by the U.S. Bureau of Economic Analysis, and from the Brewer's Almanac, published ...Exercise 4.46. a. Use Equation (4.1) to determine the sample covariance. b. Use Equation (4.2) and your answer from part (a) to find the regression equation. Compare your result to that found in the specified exercise. A ...y-bar = 1 − 2x a. Compute the three sums of squares, SST, SSR, and SSE, using the defining formulas (page 164). b. Verify the regression identity, SST = SSR + SSE. c. Compute the coefficient of determination. d. Determine ...Following are the size and price data for custom homes from Exercise 4.52. a. Compute SST, SSR, and SSE, using Formula 4.2 on page 167. b. Compute the coefficient of determination, r2. c. Determine the percentage of ...For each of the sums of squares in regression, state its name and what it measures. a. SST b. SSR c. SSEPost your question

0