The Literary Digest error concerning the outcome of the 1936 U.S. Presidential election was apparently caused by:
A) selection bias
B) nonresponse bias
C) both selection bias and nonresponse bias
D) both selection bias and regression toward the mean
C
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The point at which the regression line crosses the Y axis is the a. slope
b. regression coefficient. c. predicted value of X. d. intercept.
Which of the following occurs during the embryonic period associated with pregnancy?
a. The fetus assumes the fetal position. b. The mother's heartbeat quickens. c. The placenta is formed. d. The fetus begins to suck and swallow.
The word that best describes encoding is:
a. output c. recall b. representation d. reorder
There is strong evidence that genetic factors play a role in obesity. Which of these appears to be a possible mechanism for this genetic control of obesity?
a) X chromosome b) number of fat cells c) endocrine dysfunction d) tumors in the hypothalamus