statistics of psy paper - RUNNING HEAD Statistics for...

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RUNNING HEAD Statistics for PsychologyStatistics for PsychologyJames Gonzalez PSY/315December 11, 2013Esmeralda Lopez
1.For the following scores, find the (a) mean, (b) median, (c) sum of squared deviations, (and) 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, 0a) Mean- 2b) Median- 2c) Sum of squared deviaton-52d) Variance-2.47e) Standard Deviation- 1.57 To get the sum of squared deviation subtract the mean from each score which willgive you each score's deviation score then square each of these scores. Add up thesquared deviation scores and you have the sum of squared deviation scores. Divide the sum of the squared deviation scores by the number of scores and you will have the variance. The square root of the variance is the standard deviation.S M DS SDSSum SD = 52 Variance 52/21=2.47Standard Deviation- square root of 2.47= 1.57.
RUNNING HEAD Statistics for Psychology2. 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; 1,47.1,112; 1,245; 1,361; 1,372; 1,472Mean1312Median1361sum of squared deviations: 76090
3. 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.
RUNNING HEAD Statistics for Psychology
4. A psychologist interested in political behavior measured the square footageof the desks in the official office of four U.S. governors and of four chief executiveofficers (CEOs) of major U.S. corporations. The figures for the governors were44, 36, 52, and 40 square feet. The figures for the CEOs were 32, 60, 48, and 36square feet. (a) Figure the means and standard deviations for the governors andfor the CEOs. (b) Explain, to a person who has never had a course in statistics,what you have done. (c) Note the ways in which the means and standarddeviations differ,and speculate on the possible meaning of these differences,

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