The advantage of probability sampling over non-probability sampling is that:
a. a control group can be established
b. the population is larger.
c. there is a wider array of sampling methods from which to choose.
d. the results can be generalized.
d
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John has difficulty distinguishing between the printed letter m and the printed letter n. His problem is
a. visual acuity. b. figure-ground discrimination. c. visual closure. d. visual discrimination. e. visual memory.
How many degrees of freedom are in a sample of 24 individuals?
A. 0 B. 12 C. 23 D. 24
Using a holistic basis for measurement, which of the following is considered a standard measurement for successful treatment outcomes?
A) ?total abstinence as the only standard B) ?length of time of abstinence from all psychoactive substances C) ?improvement that might include moderate drug/alcohol use D) ?ability to secure stable housing
Use of health services is lower among many Hispanic American subgroups than among whites and African Americans. Which of the following variables is least likely to be a barrier to health service use?
A) language barriers. B) illegal entry to the United States C) distrust of the medical system D) lack of health service need