PSY 315 Week 3 Assingments from the text - Week 3 Assignments from the text Karen Wilson Chapter 2 Practice 13 16 21 11 For the following scores find

PSY 315 Week 3 Assingments from the text - Week 3...

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Week 3 - Assignments from the text Karen Wilson Chapter 2 – Practice Problems – 11, 12, 13, 16, & 21 11. For the following scores, find the (a) mean, (b) median, (c) sum of squared deviations, (d) variance, and (e) standard deviation: 2, 2, 0, 5, 1, 4, 1, 3, 0, 0, 1, 4, 4, 0, 1, 4, 3, 4, 2, 1, 0 (a) mean = (2+2+0+5+1+ 4+ 1+ 3+0+ 0+1+ 4+ 4+ 0+ 1+ 4+ 3+ 4+ 2+ 1+ 0)/21=2 (b) Median = 2 Sort the data 0 0 0 0 0 1 1 1 1 1 2 2 2 3 3 4 4 4 4 4 5 Median is the middle value = 2 (c) sum of squared deviations (2-2)2+(2-2)2+(0-2)2+(5-2)2+(1-2)2+(4-2)2+(1-2)2+(3-2)2+(0-2)2+(0-2)2+(1-2)2+(4- 2)2+(4-2)2+(0-2)2+(1-2)2+(4-2)2+(3-2)2+(4-2)2+(2-2)2+(1-2)2+(0-2)2 = 56 (d) variance 56/21 = 2.667 (e) standard deviation SQRT (2.667) = 1.633 12. For the following scores, fine 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 56.5;123;181;186.5;236.5 (b) median =181 (c) sum of squared deviations ??????????? (d) variance ?????????? (e) standard deviation SQRT()= ?????????? 13. For the following scores, fine 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 3.0+ 3.4+ 2.6+ 3.3+ 3.5+ 3.2=19/6=3.17 (b) median =3.25 Sort the data: 2.6, 3.0, 3.2, 3.3, 3.4, 3.5 middle value is 3.25 (c) ?????? (d) ??????
Week 3 - Assignments from the text Karen Wilson (e) ?????? 16. A psychologist interested in political behavior measured the square footage of the desk in the official office of four U.S. governors and of four chief executive officers (CEOs) of major U.S. corporations. The figures for the governors were 44, 36, 52, and 40 square feet. The figures for the CEOs were 32, 60, 48, and 36 square feet. (a) Figure the means and standard deviations for the governors and for the CEOs. (b) Explain, to a person who has never had a course in statistics, what you have done. (c) Not the ways in which the means and standard deviations differ, and speculate on the possible meaning of these differences, presuming that they are representative of U.S.

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