What causes variance?
What will be an ideal response?
Main Points:
Variance exists because people, animals, plants – all members of any class of things – differ.
Any variable will be influenced by an unknown number of other variables.
Some of these will have a positive effect and some will have a negative effect.
Those subjects with more positive effects than negative effects will be above the average performance and those with more negative effects will be below the average performance.
The greater the preponderance of positive effects the further above average the subject’s performance.
There is a host of influences of which the researcher will be unaware.
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When developed nations exploit poorer nations, which of the following is likely to ensue?
a. Economic development will increase. b. Internal revolts against corrupt political leaders will increase. c. Rivalries among ethnic groups will increase. d. a and c above e. all of the above
What percentage of the U.S. population is foreign born?
A. 3.5 B. 8.5 C. 12.5 D. 18.5
Apply the conflict perspective on aging
What will be an ideal response?
By 2023 a majority of children (under 18 years of age) in the United States will be from a minority background. By what year will non-White ethnic groups surpass working-age Whites in number?
a. 2057 b. 2039 c. 2020 d. 2016