Unformatted text preview: Answer: IQR = Q 3Q 1 = 2 . 4. 7 = 1 . 7 . Yes, 1 . 7 = IQR > s = 1 . 181 . 5. Find the lower and upper fences. Which, if any, observations are outliers? Answer: LF = Q 11 . 5 IQR = 0 . 71 . 5(1 . 7) =1 . 85 , UF = Q 3 + 1 . 5 IQR = 2 . 4 + 1 . 5(1 . 7) = 4 . 95 . There are two outliers: 5.7 and 6.7 minutes. 6. Compare the mean to the median. Is the mean pulled in the direction of skew? Comment. Answer: The mean ¯ y = 1 . 875 is larger than the median Q 2 = 1 . 25 . The data are skewed right, so yes the mean is pulled in the direction of skew....
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This note was uploaded on 12/14/2011 for the course STAT 205 taught by Professor Hendrix during the Fall '09 term at South Carolina.
 Fall '09
 Hendrix

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