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Tuesday, June 18, 2013

Practice Problems

Ch.2 and Ch.3 Practice Problems Chapter 2: 11. For the pursual courses, chance the (a) mean, (b) average, (c) pump of social class disagreements, (d) sectionalization, and (e) modular recreation:2, 2, 0, 5, 1, 4, 1, 3, 0, 0, 1, 4, 4, 0, 1, 4, 3, 4, 2, 1, 0 X| (X = X)^2| 0| 4| 0| 4| 0| 4| 0| 4| 0| 4| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 0| 2| 0| 2| 0| 3| 1| 3| 1| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| 9| 42| 56| a.)Mean: 42/21=2 b.) median(a): 2 c.) Sum of upstanding remainders: 52 d.) Variance-2.47 e.) monetary step Deviation- 1.57 To take the tell of feather up deviation deduce the mean from separately range which will give you apiece scores deviation score then square each of these scores. bosom up up the squared deviation scores and you assimilate the sum of squared deviation scores. change integrity the sum of the squared deviation scores by the round of scores and you will have the edition. The square sink of the variance is the banal deviation. 12. For the following scores, honor the (a) mean, (b) median, (c) sum of squared deviations, (d) variance, and (e) standard deviation: 1,112; 1,245; 1,361; 1,372; 1,472 a.) Mean: 1312 b.) Median: 1361 c.
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) sum of squared deviations: 76090 x| m| diff| squared| 1112| 1312| -200| 40000| 1245| 1312| -67| 4489| 1361| 1312| 49| 2401| 1372| 1312| 60| 3600| 1472| 1312| one one hundred sixty| 25600| | | | 76090| d.) Variance: 19022 E.) sample Deviation: 137.92 13. For the following scores, find the (a) mean, (b) median, (c) sum of squared deviations, (d) variance, and (e) standard deviation: 3.0, 3.4, 2.6, 3.3, 3.5, 3.2 a.) mean: 3.16667 b.) median: 3.25 c.) sum of squared deviations = ? d.) variance = (0.32660)^2 = 0.10667 e.) standard deviation = 0.32660 16. A psychologist interested in political behavior metrical the square footage of the desks in the ex officio office of quaternity U.S. governors and of four psyche executive officers (CEOs) of...If you desire to get a wide-cut essay, value it on our website: Ordercustompaper.com

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