# Plot/Regression line

A. Create a scatter plot of the data. Do you think that there is a relationship between the number of stations that a company owns and the revenues generated by radio?

b. Find the linear regression line for the data.

c. Use the regression line to predict the radio revenues for Chancellor and

Westinghouse/Infinity. Which prediction is better?

d. Leave out the data point for Westinghouse/Infinity and recalculate the regression line. Do you think that this line will do a better job of predicting radio revenues?

Why or why not?

https://brainmass.com/statistics/regression-analysis/plot-regression-line-10266

## SOLUTION This solution is **FREE** courtesy of BrainMass!

a) created scatter plot on excel. Looking at the data there doesnt seem to be a relation. The revenue line seems to be a pretty flat hrizontal line.

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<br>b)displayed on graph.

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<br>c) shown on excel , the chancellor prediction is bettr because the other one is a outlier.

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<br>d)after leaving out westinghouse , the line will not do a better job as the R square value falls.

https://brainmass.com/statistics/regression-analysis/plot-regression-line-10266