Question

The scatterplot, created from 1995 U.S. News & World Report data on approximately 1,300 U.S. colleges and universities, depicts the relation between the student-faculty ratio at the school and the number of admissions applications the school received. Figure: Student-Faculty Ratio 50.000 40.000 30.000 Applications received 20.000 10.000 0 100 0 20 40 60 BO Student-faculty ratio 18. (Figure: Student-Faculty Ratio) Based on the scatterplot, what is the relation between an institution's student-faculty ratio and the number of applications it receives? a. perfect positive b. positive C. negative d. no relation 19. Errors in prediction lead to a variability b. standard error c. standard deviation d. regression to the mean 20. The standard error of estimate could be thought of as the: a standard deviation of the data points around the regression line. b. standard deviation of the independent variable on the regression line. C. standard deviation of the dependent variable. d. amount of error made in random selection. data points around the regression 21. The standard error of the estimate is the standard deviation of the line. a. predicted b random c. clustered d. actual Page

Answer 1

Que.18

No relation.

Because we didn't see any increasing or decreasing pattern in the scatter plot.

Que.19

Error's in prediction lead to standard error.

Que.20

Standard deviation of the data points around the regression line.

Que.21

predicted.