An industrial psychologist obtained a list of the 859 employees in a large company. He numbered the employees from 001 to 859, then used a table of random numbers to choose a sample of 100 employees. What kind of sample did he select?
a. stratified random sample
b. cluster sample
c. systematic sample
d. simple random sample
e. purposive sample
D
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What are the x and y axes in a scatter plot, respectively?
a.) time and percentage b.) the independent and dependent variables c.) percentage and degrees of freedom d.) time and the dependent variable
Which of these is not an example of gerrymandering?
a. Districts are drawn to cover the same amount of geographic area, even if this means that population varies between districts. b. A state designs districts to ensure that most incumbent representatives will keep their seats in the next election. c. A district is drawn to be 95% Republican so that neighboring districts are more difficult for the Republican Party to win. d. A Democratic-leaning urban area is split up into multiple districts and combined with suburban areas that are majority Republican.
Why are Texas college students required to take a course in Texas politics?
A. Most states require college students to take a course in state politics. B. Federal law requires that states require a course in state politics. C. Because of Texas pride, the Texas legislature requires a course in Texas politics. D. After the Civil War, the Texas Supreme Court ruled that a course in Texas politics was necessary for college graduation.
What is listed in the first column of an ANOVA summary table?
A) degrees of freedom B) sums of squares C) source of variation D) significance level