Chapter 4 Q3

Question Help

Executives at a large multinational corporation want to be able to predict the average number

averagenumber of units sold per month

ofunitssoldpermonth by the whole corporation for

bythewholecorporationfor a given number of part dash time employees

part-timeemployees. Data on units

units sold

sold nothing

and part dash time employees

part-timeemployees were collected for a sample of months

months. Complete parts a through c below.

a) Which variable is the explanatory or predictorvariable?

A.

The explanatory variable is units sold per month

unitssoldpermonth because the executives want to know how units sold per month

unitssoldpermonth depends on part dash time

part-time employees

employees

B.

The explanatory variable is units sold per month

unitssoldpermonth because the executives want to know how part dash time

part-time employees

employees depends on units sold per month

unitssoldpermonth.

C.

The explanatory variable is part dash time

part-time employees

employees because the executives want to know how part dash time

part-time employees

employees depends on units sold per month

unitssoldpermonth.

D.

The explanatory variable is part dash time

part-time employees

employees because the executives want to know how units sold per month

unitssoldpermonth depends on part dash time

part-time employees

employees

b) Which variable is the responsevariable?

A.

The response variable is units sold per month

unitssoldpermonth because the executives want to know how units sold per month

unitssoldpermonth depends on part dash time

part-time employees

employees

B.

The response variable is part dash time

part-time employees

employees because the executives want to know how units sold per month

unitssoldpermonth depends on part dash time

part-time employees

employees

C.

The response variable is units sold per month

unitssoldpermonth because the executives want to know how part dash time

part-time employees

employees depends on units sold per month

unitssoldpermonth.

D.

The response variable is part dash time

part-time employees

employees because the executives want to know how part dash time

part-time employees

employees depends on units sold per month

unitssoldpermonth.

c) Which variable would you plot on they-axis?

A.

Since units sold per month

unitssoldpermonth is the responsevariable, it should be plotted on they-axis.

B.

Since part dash time employees

part-timeemployees is the responsevariable, it should be plotted on they-axis.

C.

Since units sold per month

unitssoldpermonth is the explanatoryvariable, it should be plotted on they-axis.

D.

Since part dash time employees

part-timeemployees is the explanatoryvariable, it should be plotted on they-axis.

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