For a Sample of 15 Rural Counties in One State,a

question 23

Essay

For a sample of 15 rural counties in one state,a researcher has collected information about the rate of deaths due to traffic accidents per 1,000,000 population and the percentage of the population which consists of males,age 16 to 25.For these variables,find the least squares regression line and compute r and r squared.Write a sentence or two summarizing and explaining your results.
$\begin{array}{|l|l|l|}\hline & \text { RATE OF } & \text { \% OF POPULATION } \\\hline \text { TOUNTY } & \text { TRAFFIC DEATHS } & \text { YOUNG MALES } \\\hline \mathrm{A} & 15 & 4 \\\hline \mathrm{B} & 16 & 5 \\\hline \mathrm{C} & 22 & 10 \\\hline \mathrm{D} & 23 & 9 \\\hline \mathrm{E} & 20 & 8 \\\hline \mathrm{F} & 25 & 11 \\\hline \mathrm{G} & 18 & 2 \\\hline \mathrm{H} & 15 & 6 \\\hline I& 19 & 12 \\\hline J&10 & 3 \\\hline K&9 & 2 \\\hline L&18 & 15 \\\hline M&15 & 9 \\\hline N& 24 & 16 \\\hline O&9 & 3 \\\hline\end{array}$

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Definitions:

Density

The mass per unit volume of a substance, often measured in grams per cubic centimeter or kilograms per cubic meter.

Volume

The volume of a material or item is determined by the space it fills or is contained within a vessel.

Material

Any substance or mixture of substances intended for use in various processes or for the manufacture of products.

Density

Density is a physical property that measures the mass of a substance per unit volume, used to characterize the compactness of a material.