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One-variable data: Distributions and measures of center and spread SAT question
Math · Problem-Solving and Data Analysis · Medium · Answer it here, explanation included.
Which of the following statements about the means and medians of data set A and data set B is true?
ExplanationShow
Choice A is correct. The mean of a data set is the sum of the values divided by the number of values. The mean of data set A is 
, or 5. The mean of data set B is 
, or 14.5. Thus, the means are different. The median of a data set is the middle value when the values are ordered from least to greatest. The medians of data sets A and B are both 5. Therefore, the medians are the same, so only the means are different.
Choices B, C, and D are incorrect and may result from conceptual or calculation errors.
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