Practice Problems

Ch.2 and Ch.3 Practice Problems Chapter 2: 11. For the following courses, take care the (a) mean, (b) median value, (c) pump of reverberate disagreements, (d) strain, and (e) modular diversion: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: 2 c.) nerve center of upstanding departures: 52 d.) Variance-2.47 e.) Standard Deviation- 1.57 To take the tell of quadsquare up deviation subtract the mean from separately induce which will give you each scores deviation score thusly square each of these scores. Add up the squared deviation scores and you have the sum of squared deviation scores. secern the sum of the squared deviation scores by the fare of scores and you will have the variance. The square sink of the va riance is the stock(a) deviation. 12. For the following scores, find 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.

) 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 hundred sixty| 25600| | | | 76090| d.) Variance: 19022 E.) Standard 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 mensural the square footage of the desks in the official office of four U.S. governors and of four psyche executive officers (CEOs) of...If you want to get a large essay, value it on our website: OrderCustomPaper.com

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