Question

the students in a class collected data on the number of minutes some of them spend brushing their teeth every day. that data is shown in the dot plot below.
brushing teeth
dot plot with x - axis labels 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5; dots at 1.5 (1 dot), 2 (2 dots), 2.5 (1 dot), 3 (1 dot), 4.5 (1 dot)
what was the range of minutes students brushed their teeth?
answer attempt 1 out of 2
empty box minutes

Explanation:

Step1: Identify max and min values

From the dot plot, the minimum time is $1.5$ minutes and the maximum time is $4.5$ minutes.

Step2: Calculate the range

Range is calculated as maximum value minus minimum value. So, $4.5 - 1.5 = 3$.

Answer:

3