Practice Problems

Ch.2 and Ch.3 Practice Problems Chapter 2: 11. For the following courses, mystify the (a) mean, (b) median(prenominal), (c) pump of socio-economic class disagreements, (d) part, and (e) modular passing: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.) sum of upstanding aberrations: 52 d.) Variance-2.47 e.) Standard Deviation- 1.57 To take the tell of square up deviation subtract the mean from separately induce which will give you each scores deviation score so square each of these scores. Add up the squared deviation scores and you have the sum of squared deviation scores. give the sum of the squared deviation scores by the bit of scores and you will have the variance. The square sink of the variance is the step 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 atomic number 6 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 measured the square footage of the desks in the official office of quaternary U.S. governors and of four psyche executive officers (CEOs) of...If you want to get a salutary essay, value it on our website: OrderEssay.net

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