A histogram where the horizontal axis is labeled "Height (mm)" and numbered 1400, 1500, 1600, 1700, 1800, 1900 and the vertical axis is labeled "Frequency" and numbered 0, 10, 20, 30, 40.
There are vertical bars with bases and heights as follows: 1450 to 1500, 2, 1500 to 1550, 6, 1550 to 1600, 18, 1600 to 1650, 29, 1650 to 1700, 33, 1700 to 1750, 20, 1750 to 1800, 11, and 1800 to 1850, 1.
Under the horizontal axis, the mean minus two standard deviations is marked at 1518 mm, the mean minus one standard deviation is marked at 1588 mm, the mean is marked at 1658 mm, the mean plus one standard deviation is marked at 1728 mm, the mean plus two standard deviations is marked at 1798 mm.
Back to Exercise: Heights of students answer 6.
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Last updated: 31 July, 2006.