Question

a group of parents are surveyed to find out how many hours per night their children sleep on average. the histogram shows the results. according to the data, how much longer, on average, do 1 - to 2 - year - old children sleep than 6 - to 13 - year - old children? a 1 hour b 1.5 hours c 2 hours d 2.5 hours

Explanation:

Step1: Observe the histogram

From the histogram, 1 - 2 - year - old children sleep around 13 hours on average, and 6 - 13 - year - old children sleep around 10 hours on average.

Step2: Calculate the difference

We subtract the average sleep hours of 6 - 13 - year - old children from that of 1 - 2 - year - old children. So, \(13−10 = 3\) hours.

Answer:

3 hours