Question

What is the average miles per gallon (mpg) for all new cars? Using Consumer Reports, a random sample of 35 new cars gave an average of 21.1 mpg.

(a) Identify the variable.
(b) Is the variable quantitative or qualitative?
(c) What is the implied population?

Answer 1

Answer:

a) mpg

b) quantitative

c) all new cars

Step-by-step explanation:

The variable in the given scenario is "mpg" because we are interested om average mpg for all new cars and mpg will varies from car to car.

The variable mpg is quantitative because it can be represented numerically and mathematical operation on the variable will be meaningful.

The implied population is "all new cars" because we are interested in average  mile per gallon for all news car which is difficult to asses and for this purpose sample of 35 news cars is selected.