Suppose that the data in the table below shows the average earnings of year-round full-time workers by gender for several different levels of educational attainment. Find and interpret the slope of the linear regression line. Round the slope to three decimal places.
?
Average Annual Earnings
Males
Females
$21,659
$18,118
$26,277
$21,938
$35,725
$30,616
$41,875
$36,201
$44,404
$38,558
$57,220
$50,413
$71,530
$63,270
$82,401
$72,270
A. The slope is 0.910. The average annual earnings of females is decreasing at a rate of $0.910 per dollar increase in the annual of males.
B. The slope is 0.807. The average annual earnings of females is decreasing at a rate of $0.807 per dollar decrease in the average annual earnings of males.
C. The slope is 0.759. The average annual earnings of females is decreasing at a rate of $0.759 per dollar decrease in the average annual earnings of males.
D. The slope is 0.900. The average annual earnings of females is increasing at a rate of $0.900 per dollar increase in the average annual earnings of males.
E. The slope is 0.749. The average annual earnings of females is increasing at a rate of $0.749 per dollar increase in the average annual earnings of males.
Answer: D
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