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.
The frequencies for each height range are different.
The frequencies for each height range are different.
When graphed, the data creates a bell curve.
When graphed, the data creates a bell curve.
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 symmetrical, bell-shaped curve when the data is graphed, indicating that most observations cluster around the central peak and that probabilities for values further away from the mean taper off equally in both directions.
