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The figures show the number of war casualties during a certain time period and t

ID: 3048046 • Letter: T

Question

The figures show the number of war casualties during a certain time period and the population of some hometowns from which the servicemen or servicewomen came. Comment on the difference in graphs and in the coefficient of determination between the top scatterplot that included a major city and the bottom scatterplot that did not include that city. This city is the point with a population of nearly 4 million. Click the icon to view the figures. The coe cent o determination is % ncluding he major city and only %, excluding he ma or city. Including the ma or c as cause thes to increase slightly This shows that the major city, with its large population and large number of casualties | (Type integers Is. Do not round.) is a dependent variable causes regression toward the mean is an influential point is an extrapolation

Explanation / Answer

An influential point is an outlier that greatly affects the slope of the regression line. One way to test the influence of an outlier is to compute the regression equation with and without the outlier.

ans-> The major city is an influential point.

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