Psychology 315 Week 2 Essay
Week Two Practice Problems
Prepare a written response to the following questions.
12. For the following scores, find the mean, median, sum of squared deviations, variance, and standard deviation:
1,112; 1,245; 1,361; 1,372; 1,472
M= (( = 6,562 = 1312.4 N 5
Sum of squared deviations:
((X-M)2 or SS
(1,112-1,312.4)2+ ((1,245-1,312.4)2 + (1,361-1,312.4)2 + (1,372- 1,312.4)2 + (1,472-1,312.4)2 = 76,089.2
SD2 = SS = 76,089.2 = 15,217.84 N 5
SD = √SD2 = √15,217.84 = 123.3606
16. A psychologist interested in political behavior measured the square footage of the desks in the official …show more content…
Note the waus 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.
The mean is about the same for the U.S. governors and CEOs. The standard deviation is twice as wide for the CEOs indicatin the CEOs can either have much larger or much smaller desks then the U.S. governors. The disparity of square footage of the desks belonging to CEOs is much wider than U.S. governors.
21. Radel and colleagues (2011) conducted a study of how feeling overly controlled makes you desire—even unconsciously—more freedom. In their study, 52 Canadian undergraduates played a video game in a laboratory and were randomly assigned to either:
a. an automony deprivation condition, in which they were told to follow instructions precisely, constantly given instructions over a loudspeaker, and carefully observed on everything they did. b. a neutral condition, which was much more laid back.
After this activity, they were asked to do a “lexical decision task” (a standard approach for measuring unconscious responses) in which they were shown a series of words and nonwords in random order and had to press “C” if it was a real word or “N” if not. Half of the real words were related to autonomy (e.g., freedom, choice) and half were neutral (e.g., whisper, hammer). The key focus of the