Question

A health food store has launched a new pack of vitamins for children. The store records the number of packs ordered by a random sample of 100 online customers and the number of packs ordered by a random sample of 100 walk-in customers.

Two dot plots are shown one below the other. The title for the top dot plot is Online Customers and the title for the bottom plot is Walk-In Customers. Below the line for each dot plot is written Number of Packs. There are markings from 1 to 5 on each line at intervals of one. For the top line there are 0, 0, 1, 4, 5 dots respectively for marks from 1 to 5. For the bottom line there are 6, 2, 1, 0, 0 dots respectively for marks from 1 to 5

Which of the following inferences can be drawn about the buying pattern of the online customers versus that of the walk-in customers?

A. Online customers buy an average of four packs compared with walk-in customers, who buy an average of one pack.

B. Online customers buy an average of five packs compared with walk-in customers, who buy an average of two packs.

C. Online customers buy an average of four packs compared with walk-in customers, who buy an average of two packs.

D. Online customers buy an average of five packs compared with walk-in customers who, buy an average of one pack.

Answer 1

Answer: The inference to make using the median is: online customers by an average of five packs compared with walking customers who buy an average of two packs online.

Step-by-step explanation:

The inference based on the median is: online customers by an average of five packs compared with walking customers who buy an average of two packs online.

The median is the middle value, which has equal data points on the right and to the left.

The median for online customers is between 5 and 6.

The median for walk-in customers is 2.

Therefore, the inference to make using the median is: online customers by an average of five packs compared with walking customers who buy an average of two packs online.