# Question: Is there evidence of global warming in the records of

Is there evidence of global warming in the records of ice cover on lakes? If Earth is getting warmer, lakes that freeze over in the winter should be covered with ice for shorter periods of time as Earth gradually warms. R. Bohanan examined records of ice duration for Lake Mendota at Madison, WI, in the paper "Changes in Lake Ice: Ecosystem Response to Global Change" (Teaching Issues and Experiments in Ecology, Vol. 3). The data are presented on the WeissStats CD and should be analyzed with the technology of your choice. Forecast the ice duration in the years 2006 and 2007.

a. Obtain a scatterplot for the data.

b. Find and interpret the regression equation.

c. Make the specified forecasts.

a. Obtain a scatterplot for the data.

b. Find and interpret the regression equation.

c. Make the specified forecasts.

**View Solution:**## Answer to relevant Questions

In this section, we introduced a descriptive measure of the utility of the regression equation for making predictions. Do the following for that descriptive measure. a. Identify the term and symbol. b. Provide an ...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 ...The data from Exercise 4.69 for average high and low temperatures in January for a random sample of 50 cities are on the WeissStats CD. a. Decide whether finding a regression line for the data is reasonable. If so, then also ...Fill in the blanks. a. Based on the least-squares criterion, the line that best fits a set of data points is the one having the possible sum of squared errors. b. The line that best fits a set of data points according to the ...Post your question