Summarizing and Making Inferences from Quantitative Data MCQ
Which of the following is appropriate for using the Kendalls tau correlation coefficient?
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Correct Answer:
One variable measured on an ordinal scale and one variable measured on a continuous scale
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Testing an association between two variables requires ______.
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Variables measured at least on an ordinal scale
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Testing for a difference between three groups requires ______.
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Correct Answer:
Estimates of a summary measure of location for each group
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Which of the following is TRUE about reference distributions?
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Correct Answer:
Reference distributions are approximations which may be useful in practice.
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In hypothesis testing, a type I error is ______.
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Claiming an effect which is not actually real
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Which of the following is TRUE?
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The median is more robust than the mean.
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Which of the following is NOT true?
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Correct Answer:
Every data point contributes equally to a summary measure of spread.
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Suppose that one data point in a dataset is altered. Which of the following is guaranteed to change?
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Which of the following measures of location is guaranteed NOT to change by adding a single extreme data point?
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Correct Answer:
None of these
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Which of the following is NOT true?
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Correct Answer:
Every data point contributes equally to a summary measure of location.
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