The sampling method that involves selecting cases to include by chance is called ________ sampling.
A. random
B. convenience
C. quota
D. intermediary
Answer: A
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When estimating the variance of a population from the sample, you cannot use the sample's variance directly because:
A) it is based on using absolute deviations B) it is based on using squared deviations C) it tends to be slightly too large D) it tends to be slightly too small
In a ranked list of 25 scores, the median is the score of
a. the 12th case b. the 13th case c. the average of the scores of the 12th and 13th cases d. the average of all of the scores
In a society with leadership based on charismatic authority, leaders derive their authority from
A. custom and accepted practice. B. their exceptional personal or emotional appeal. C. the written rules and regulations of the political system. D. threats to use coercion to impose their will on others.
The "giddy multitude" that participated in unrest in early Virginia was made up of
a. black slaves and freemen b. blacks and poor whites c. black slaves and Susquehanna Indians d. Algonquin tribes and French voyageurs