Twenty-five sixth-grade students were asked to estimate how many hours a week they spend talking on the phone. This dot plot represents their reported number of hours of phone usage per week.

- Hours on the phone per week: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10

1. How many of the students reported not talking on the phone during the week?
2. What is the largest number of hours a student spends talking on the phone per week?

The number of students who reported not talking on the phone can be found by counting the dots at '0' on the dot plot. The largest number of hours a student spends talking on the phone is represented by the highest value with dots on the dot plot.

Explanation:

To answer the first part of the question regarding the dot plot, we need to look for the number '0' on the plot, as this represents the number of hours students reported not talking on the phone. The number of dots plotted above the number '0' indicates how many students did not use the phone. If the dot plot has one dot above the '0', that means one student reported not talking on the phone during the week.

For the second part of the question, we need to identify the highest number represented on the dot plot. This is the largest number of hours a student spends talking on the phone per week. If the dot plot extends to '9' and there are dots plotted at that number, then '9' represents the largest number of hours a student reported talking on the phone.