Question

Before sending track and field athletes to the Olympics, the U.S. holds a qualifying meet. The upper dot plot shows the distances (in meters) of the top 888 shot putters in the preliminary round of the 201220122012 Olympic games. The lower dot plot shows the top 888 throwers in the shot put at the U.S. qualifying meet.

Answer 1

Answer:

A & C

Step-by-step explanation:

Answer 2

Answer:

C

Step-by-step explanation:

Let's consider the first answer choice:

The times in the semifinals were faster on average than the times in the finals.

We don't have to calculate the mean values of each distribution because we can see visually that the center of the final round distribution is lower than the center of the semifinal round distribution.

Since lower times are faster, we can't say that the times in the semifinals were faster on average than the times in the finals.

Hint #22 / 3

Now, let's consider the second answer choice:

The times in the finals vary noticeably less than the times in the semifinals.

We can see visually that the final round distribution is more spread out than the semifinal round distribution. We could calculate MAD or IQR from these displays, but we can see that the range of the final round distribution is larger.

So we can't conclude that the times in the finals vary noticeably less than the times in the semifinals.

Hint #33 / 3

Select this answer:

None of the above