If r = 0.48 for data set A and r = 0.48 for data set B, which of the following is true?
a. The variables in A are more strongly correlated than the variables in B.
b. The data values in A are all positive, while the data values in B are all negative.
c. The two data sets have the same level of correlation.
d. None of the answers is correct.
Question 2
For a given confidence level and when is known, the margin of error in a confidence interval estimate
a. varies from sample to sample of the same size.
b. is the same for all samples of the same size.
c. increases as the sample size increases.
d. is independent of sample size.
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