 The heights of 16-year-old males are normally distributed with mean 68 inches and a standard deviation 2 inches. Determine the z-score for: ◦ 70.

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Presentation transcript:

 The heights of 16-year-old males are normally distributed with mean 68 inches and a standard deviation 2 inches. Determine the z-score for: ◦ 70 inches ◦ 66 inches  pg 869 # 5 and 6

 Data below the mean will always have negative z-scores.  Data above the mean will always have positive z-scores.  The mean will always have a z-score of zero.  pg # 7

 If a z score is more than -2 but less than 2 then the data is considered normal.  If a z score is less than -2 or more than 2 it is considered unusual.  If a z score is less than -3 or more than 3 it is considered very unusual.

 pgs #1-6