In a Simple Least-Squares Regression Where X Refers to the Number

question 18

Multiple Choice

In a simple least-squares regression where X refers to the number of sales calls made by a sales department and Y refers to the monthly total cost of the sales department, the R-squared in the regression output would represent:

• A)the estimated monthly total costs of the sales department.
• B)the estimated monthly fixed costs of the sales department.
• C)the estimated monthly variable costs per unit of the sales department.
• D)the percent of variation in Y that is explained by X.

---

Definitions:

Enema

A medical procedure involving the introduction of liquid into the rectum for clearing the bowel, administering medication, or diagnostic purposes.

Rectum

The final section of the large intestine, concluding in the anus, where feces are stored before elimination.

Temporary Ostomy

A surgically created opening in the body for the discharge of body wastes, intended to be temporary and reversible.

Bowel Diversion

A surgical procedure to reroute the normal movement of the intestine, often resulting in a stoma, to help treat or manage various conditions of the digestive system.