Question

In the past month, Ryan has had five pizzas delivered. He kept a record of how long it took to get the pizzas: 35 minutes, 25 minutes, 15 minutes, 40 minutes, and 50 minutes. If the sixth time he orders pizza, it takes 95 minutes, how will this affect his data

Answer 1

Explanation:

95 minutes is an outlier, because it is very far above the next highest number in the data set. Since the mean is the average of the data, the outlier will skew the mean so that it is a less useful measure of center. However, since the median is simply the middle value, it is not overly affected by outliers.

Answer 2

The average delivery time goes up, from 33 min/delivery to 43.33 min/delivery.

Explanation:

The average time after the first 5 pizzas is (165 min/5 deliveries) = 33 min/delivery

The 6th pizza raise the average: (260 minutes/5 deliveries) = 43.33 min/delivery