Robert J. Havighurst popularized the concept of:
a. dual high school-college enrollment
b. outcomes-based education
c. lengthened school day/year
d. developmental tasks of adolescence
D
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______ observations are more typical of qualitative data collection, since they are “free flowing,” allowing the researcher to shift focus from one event to another as new events occur.
A. Structured B. Loose C. Semistructured D. Unstructured
A test has high score reliability if
a. it measures what it is supposed to measure. b. it has a high correlation with an appropriate criterion. c. individuals maintain their relative ranks when the test is administered a second time. d. it is a representative sample of the content domain.
Messages are sent by a neuron through the ______ and are received by the ______.
a. capillaries; synapses b. axons; dendrites c. axons; capillaries d. dendrites; axons
Why is it important to divide by df to compute sample variance?
A. Doing so makes the sample variance an unbiased estimator of the population variance. B. Doing so ensures that the value for sample variance varies between 0 and 1. C. Doing so minimizes the likelihood that the sample variance will be a negative value. D. It is not important; there is no advantage for dividing by df.