Question

Grade 10-12



Height
Range
55-
59
60-
64
65-
69
70-
74
Frequency
4
9
8
4
RSE LS
UNIT 8
Genetic Variation
>
LESSON 10
Analyzing Data About Traits
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)
• When graphed, the data creates a bell curve.
• The frequencies for each height range are different.
• When graphed, the data creates a straight line.
• The frequencies for the first and last height range are the

Answer 1

When graphed, the data creates a bell curve.

Explanation: the frequencies (4, 9, 8, 4) peak in the middle ranges and taper off symmetrically at the ends, producing the bell-shaped curve characteristic of a normal distribution.