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)
• The frequencies for each height range are different.
• When graphed, the data creates a straight line.
• When graphed, the data creates a bell curve.
• The frequencies for the first and last height range are the same.
1 answer
The correct answer is: When graphed, the data creates a bell curve.
In a normal distribution, when the data is plotted, it typically forms a bell-shaped curve, where most of the data falls around the mean, with frequencies tapering off symmetrically on both sides.
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