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 straight line.
When graphed, the data creates a straight line.
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.
1 answer
The correct response is:
When graphed, the data creates a bell curve.
A normal distribution is characterized by a bell-shaped curve when the data is graphed, indicating that most of the data points cluster around the mean and taper off symmetrically towards the extremes. If the statistician found that the height data creates this bell curve, they would conclude that it follows a normal distribution.
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1 answer
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1 answer