Use the table to answer the following question.

Question

Grade 10-12
Height Range 55-59 60-64 65-69 70-74
Frequency 4 9 8 4
A statistician collects the following height data in inches for a school district. The statistician says that it is a normal distribution. How did they draw this conclusion?

(1 point)
Responses

The frequencies for each height range are different.
The frequencies for each height range are different.

When graphed, the data creates a bell curve.
When graphed, the data creates a bell curve.

The frequencies for the first and last height range are the same.
The frequencies for the first and last height range are the same.

When graphed, the data creates a straight line.
When graphed, the data creates a straight line.

Answer 1

The correct response is:

When graphed, the data creates a bell curve.

In a normal distribution, when the frequency of data points is graphed, the resulting shape is a bell curve, indicating that most of the data points are concentrated around the mean, with frequencies tapering off symmetrically towards the extremes.