The Normal Curve (continued)

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The Normal Curve (continued)

• NHANES example p.69
• Average height of women 18-74 yrs. Old was 63.5
  inches (5 feet, 3.5 inches) with SD of 2.5
  inches.
• What percent of women had heights over
• 5 ft. 6 in.?
• 2. What percent of women had heights over
• 67 in.?

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• 3. What percent of women were shorter than
• 5 ft.?
• Percentiles
• Example 1 What height is the 30th percentile of
  the NHANES data on womens heights?
• Example 2 The average SAT score was 500 with a
  SD of 100. In what percentile is a score of 650?