What’s the answer Use the table to answer the following question.

Question

Height
Range
Grade 10-12
55-
59
60-
64
65-
69
Frequency 4 9 8
70-
74
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)
A. The frequencies for the first and last height range are the same.
B. When graphed, the data creates a bell curve.
C. The frequencies for each height range are different.
D. When graphed, the data creates a straight line.

Answer 1

To determine how the statistician concluded that the height data follows a normal distribution, we need to consider the characteristics of a normal distribution.

A normal distribution is typically represented by a bell curve, where the frequencies increase as you approach the mean and then decrease symmetrically on the other side.

Given the options:

A. The frequencies for the first and last height range are the same.
B. When graphed, the data creates a bell curve.
C. The frequencies for each height range are different.
D. When graphed, the data creates a straight line.

The correct answer is B. When graphed, the data creates a bell curve. This option directly supports the conclusion of a normal distribution, as a bell curve is the characteristic shape of a normal distribution.