Question

George designed an experiment to determine the number of calories consumed daily in the average American diet. The procedure he used for his experiment is shown below.

Find 100 volunteers to record everything they eat for a week
Ask volunteers what their favorite dessert is
Collect volunteers' records
For each volunteer, calculate the total number of calories taken in during the week
Divide each volunteer's total calorie count by seven and then average the 100 participants' daily calorie consumption
Which step in George's experimental procedure is unnecessary?
a) Asking volunteers about their favorite dessert
b) Calculating the total number of calories taken in during the week
c) Dividing each volunteer's total calorie count by seven
d) Finding 100 volunteers to record their weekly food intake

Answer 1

The unnecessary step is asking volunteers about their favorite dessert, as it does not help in determining the average daily caloric intake.

Step-by-step explanation:

The step in George's experimental procedure that is unnecessary for determining the average daily calorie consumption of the American diet is asking volunteers about their favorite dessert. This question does not contribute to calculating the caloric intake. The necessary steps include finding 100 volunteers to record their weekly food intake, collecting their records, calculating the total number of calories consumed during the week for each volunteer, and dividing each volunteer's total calorie count by seven to obtain the daily average, followed by averaging these daily calories across all participants.