The variability among means drawn at random from the same population
a. represents effects of variation in the independent variable.
b. is due to chance factors.
c. is due to biased sampling.
d. is reduced when sample size is reduced.
e. Both a) and d) are correct.
Ans: b
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a. is not subjected to biases from the participants. b. is more likely to generate less biased information. c. can offer stories from the viewpoints of the participants. d. is the only way to understand complicated behavioral phenomenon.
Which one of the following describes what long-term memory does?
A. retains information for later recall B. translates information from the senses into mental images C. lasts for only about 30 seconds D. operates through selective attention
The variability of a distribution refers to the amount of what in a distribution of data for a variable?
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From the perspective of Erik Erikson's theory of psychosocial development, children's ability to trust those around them stems from:
a. Early experiences with teachers b. Experiences with adults during infancy c. Peer behaviors during the elementary years d. Friendships formed during the teenage years