The median is the preferred measure of central tendency when
a. the scale of measurement is nominal.
b. the scale of measurement is ordinal.
c. the scale of measurement is ratio.
d. the distribution is symmetrical and the scale of measurement is interval or ratio.
B
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Which group of grandparents tends to be more involved with their grandchildren?
A. Caucasian B. Asian American C. Hispanic D. African American
What should be taken into account before using an A-B-A-B design? a. Is it ethical to remove treatment? b. Can treatment be removed?
c. Will the level of behavior reverse? d. all of these
The basic assumption of Seligman's explanation for depression is that ____
a. both cognitions and feelings of helplessness are learned and that depression results from learned helplessness b. cognitions and but not feelings of helplessness are learned and that depression results from learned helplessness c. feelings but not cognitions of helplessness are learned and that depression results from learned helplessness d. high levels of negative cognitions coupled with stress results in depression
What percentage of the population with an intellectual disability is only mildly affected?
a. 15 b. 40 c. 60 d. 85