The most frequently occurring score in a set of scores is:
a. the mean for the data set
b. the median for the data set
c. the mode for the data set
d. the standard deviation for the data set
C
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Sunyi says, "Arya is going." What is the earliest approximate age that Sunyi should be able to use this sentence?Question
a. ?eighteen to twenty-four months b. ?twelve months c. ?three years d. ?five years
The _____of a test is the extent to which it measures what it is supposed to measure
a. validity c. standardization b. reliability d. none of these
Which of the following is true of prenatal exposure to cocaine?
A. It cannot occur since cocaine does not cross the placenta. B. It causes abnormal circuit formation among dopamine neurons. C. It is much more devastating than prenatal exposure to alcohol. D. It has beneficial effects on IQ because it is a stimulant.
Sleep patterns are most likely to change at puberty due to: a. social pressures to stay out late with friends
b. a drop in the production of melatonin. c. the need to sleep more due to the adolescent growth spurt. d. changes in physical activity and eating patterns.