# Practice Problems Ch 2 - Practice Problems Chapter Two 1...

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Chapter 3 / Exercise 2
Essentials of Statistics for the Behavioral Sciences
Gravetter/Wallnau
Expert Verified
Practice Problems Chapter Two1Practice Problems Chapter TwoSabrina ArmstrongPSY/315February 6th, 2012Tiffany Cron
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Chapter 3 / Exercise 2
Essentials of Statistics for the Behavioral Sciences
Gravetter/Wallnau
Expert Verified
Practice Problems Chapter Two2Practice Problems Ch. 2: 11, 12, 13, 16, & 2111. for the following scores: 2, 2, 0, 5, 1, 4, 1, 3, 0, 0, 1, 4, 4, 0, 1, 4, 3, 4, 2, 1, 0Find the: (a) Mean = 2(b) Median= 2(c) Sum of squared deviations
(d) Variance = 2.8(e) Standard deviation
12. for the following scores: 1,112; 1,245; 1,361; 1,372; 1,472Find the:(a) Mean = 1,312.4(b) Median= 1,361(c) Sum of squared deviations
(d) Variance = 19,022.3(e) Standard deviation
13. for the following scores: 3.0, 3.4, 2.6, 3.3, 3.5, 3.2Find the:(a) Mean= 3.167(b) Median= 3.25(c) Sum of squared deviations
16. A psychologist interested in political behavior measured the square footage of the desks 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) Note 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. governors and large corporations’ CEOs in general.Solution: