# Chapter8 - 1 Chapter 8 81 x = 131.30 s2 = 113.85 s = 10.67 82 Descriptive Statistics for Y Mean Variance Standard Dev Skewness Kurtosis Minimum

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1 Chapter 8 8–1. ¯ x = 131 . 30, s 2 = 113 . 85, s = 10 . 67. 8–2. Descriptive Statistics for Y Mean = 34 . 767 Variance = 1 . 828 Standard Dev = 1 . 352 Skewness = 0 . 420 Kurtosis = 2 . 765 Minimum = 32 . 100 Maximum = 37 . 900 n = 64 Lower Limit Cell Count 32.1000 1 X 32.4625 4 XXXX 32.8250 3 XXX 33.1875 2 XX 33.5500 7 XXXXXXX 33.9125 6 XXXXXX 34.2750 9 XXXXXXXXX 34.6375 7 XXXXXXX 35.0000 7 XXXXXXX 35.3625 5 XXXXX 35.7250 2 XX 36.0875 2 XX 36.4500 4 XXXX 36.8125 1 X 37.1750 1 X 37.5375 3 XXX

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2 8–3. Descriptive Statistics for X Mean = 89 . 476 Variance = 17 . 287 Standard Dev = 4 . 158 Skewness = 0 . 251 Kurtosis = 1 . 988 Minimum = 82 . 600 Maximum = 98 . 000 n = 90 Lower Limit Cell Count 82.60 4 XXXX 83.37 6 XXXXXX 84.14 4 XXXX 84.91 6 XXXXXX 85.68 7 XXXXXXX 86.45 3 XXX 87.22 8 XXXXXXXX 87.99 4 XXXX 88.76 4 XXXX 89.53 7 XXXXXXX 90.30 6 XXXXXX 91.07 4 XXXX 91.84 3 XXX 92.61 4 XXXX 93.38 4 XXXX 94.15 5 XXXXX 94.92 4 XXXX 95.69 3 XXX 96.46 1 X 97.23 3 XXX
3 8–4. Number of Defects Frequency Relative Freq 1 1 0.0067 2 14 0.0933 3 11 0.0733 4 21 0.1400 5 10 0.0667 6 18 0.1200 7 15 0.1000 8 14 0.0933 9 9 0.0600 10 15 0.1000 11 4 0.0267 12 4 0.0267 13 6 0.0400 14 5 0.0333 15 1 0.0067 16 1 0.0067 17 1 0.0067 150 1.0000 ¯ x = 6 . 9334, s 2 = 12 . 5056, R = 16, ˜ x = 6 . 5, MO = 4. The data appear to follow a Poisson distribution, though

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## This homework help was uploaded on 04/09/2008 for the course ENGR, STAT 320, 262, taught by Professor Harris during the Spring '08 term at Purdue University-West Lafayette.

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Chapter8 - 1 Chapter 8 81 x = 131.30 s2 = 113.85 s = 10.67 82 Descriptive Statistics for Y Mean Variance Standard Dev Skewness Kurtosis Minimum

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