The ___________ is the amount of variability in the dependent variable attributable to each source
a) sum of square
b) standard deviation
c) mean square
d) correlation coefficient
A
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With respect to pregnancy, the term "miscarriage" is defined as
a. a situation in which a woman delivers a baby more than two months prior to the due date. b. a pregnancy in which the fertilized egg is not implanted in the uterus. c. a "false pregnancy" in which menstruation has been biologically suppressed, leading the woman to believe that she is pregnant. d. a termination of pregnancy that is not intended, prior to the 20th week of pregnancy.
Regarding interpersonal attraction, which of the following statements is FALSE?
a. Similarity is a factor in interpersonal attraction because it is reinforcing to see our beliefs and attitudes shared by others. b. The general rule for friendships is that friends will be similar in age, sex, and ethnicity. c. In choosing a mate, we tend to marry someone who is like us in almost every way. d. Unmarried couples who are living together tend to be complete opposites of each other.
Is it possible for a statistical analysis to yield three main effects in a 2 x 2 factorial study?
A) No, because there are only two independent variables. B) No, because there are only two cells in such a design. C) Yes, but only if the test for an interaction is not significant. D) Yes, but only if the test for an interaction is also significant.
When researchers ask young, middle-aged, and older adults to rate their own health, what age pattern do they find?
a. The percentage who describe their health as excellent or very good declines rapidly with age; by age 65, only a very small number choose such a description. b. The percentage who describe their health as excellent declines with age, but 2/3 of those over 75 still rate their health as at least good. c. There is little change with age in the percentage who describe their health as excellent, but a substantial rise among those over 65 who describe their health as poor. d. Self-rated health remains essentially constant over age, because older adults adjust their standards of "excellent" or "good."