In order to study causal relationships,
A) the null hypothesis must not be rejected.
B) external validity is essential.
C) we must use a t-test or F-test.
D) there must be variation of the independent variable.
Answer: D
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The county judge in Texas not only sits as a member and chair of the county commissioners court and is considered the chief administrative officer of the county government, he or she also
A) is a sitting member of the court of appeals in the region in which the county is situated. B) holds the judicial position of judge of the constitutional county court of that county. C) holds the judicial position of judge of the county-court-at law (the statutory county court) of that county. D) is empowered to sit on the bench of the criminal district court when the district judge for the court is absent. E) is an ex officio member of the city council of the municipality in which the county seat is located.
Unbeknownst to a school's testing staff, a young child serves as a participant in a psychological study during which she is administered an IQ test on three occasions
When she takes the same IQ test at her school two months later, her IQ has jumped from 110 to 125. What can we say about the IQ test? A) The test was valid. B) All IQ tests are meaningless. C) The improved score is probably due to practice effects. D) The external validity of the test has been compromised.
Discuss two different categories of economic interest groups and contrast these groups with public interest groups.
What will be an ideal response?
_____________ is defined s the number of values that are free to vary
a. degrees of freedom b. levels of freedom c. measures of freedom d. points of freedom