Question

Use the table to answer the following question.

Height Frequency of Students in Grades 10-12
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

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

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

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.

Answer 1

When graphed, the data creates a bell curve.

Explanation: frequencies rise toward the middle classes (9 and 8) and fall off at the ends (4 and 4), producing the symmetric, bell-shaped pattern characteristic of a normal distribution.