Shalane is investigating the relationship between athleticism and life satisfaction. She asks each student to indicate whether she or he is an athlete; then, the students complete a life satisfaction survey. In this example, athleticism is a(n) _______ variable.
a. ordinal
b. ratio
c. independent
d. nominal
Ans: D
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A variable for which the scores represent a change in quantity is a _____ variable
a. qualitative b. quantitative c. class interval d. nominal
For a population with a standard deviation of ? = 6, what is the z-score corresponding to a score that is 12 points above the mean?
a. z = 1 c. z = 6 b. z = 2 d. z = 12
In research studies, the term "effect size" refers to a. how much each treated and untreated person in the study changes
b. the power of the statistical tests that are used to detect the impact of the independent variable. c. how many subjects are included in a particular study. d. the degree of external validity that the study has.
Which of the following theories is concerned with the allocation of mental effort to various activities?
a. Broadbent's filter model b. Treisman's attenuation model c. Kahneman's capacity model d. Deutsch/Norman's memory selection model