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M119L06-page11 - k = 3 1 − 1 k 2 = 1 − 1 3 2 = 1 − 1...

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(Lesson 6: Measures of Spread or Variation; 3-3) 3.25 Case k = 2 ( ) 1 1 k 2 = 1 1 2 ( ) 2 = 1 1 4 = 3 4 Therefore, at least 3 4 (i.e., at least 75%) of the data values must lie within two SDs of the mean. Case
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Unformatted text preview: k = 3 ( ) 1 − 1 k 2 = 1 − 1 3 ( ) 2 = 1 − 1 9 = 8 9 Therefore, at least 8 9 (i.e., at least 88.8 %) of the data values must lie within three SDs of the mean....
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