Question

what is the difference between the greatest and the least amount of time spent sleeping?
a. $\frac{1}{4}$ hour
b. $\frac{1}{2}$ hour
c. $\frac{3}{4}$ hour
d. $\frac{7}{4}$ hour

Explanation:

Step1: Identify the greatest and least values

The greatest value from the data - plot is 1 hour and the least value is $\frac{1}{4}$ hour.

Step2: Calculate the difference

We find the difference by subtracting the least value from the greatest value. So, $1-\frac{1}{4}=\frac{4 - 1}{4}=\frac{3}{4}$ hour.

Answer:

The difference between the greatest and the least amount of time spent is $\frac{3}{4}$ hour. So the answer is (assuming the option with $\frac{3}{4}$ hour is present among the choices). If we assume the options are:
A. $\frac{1}{4}$ hour
B. $\frac{1}{2}$ hour
C. $\frac{3}{4}$ hour
D. $\frac{1}{8}$ hour
The answer is C. $\frac{3}{4}$ hour.