IQ scores are collected from a sample of students at a large university. The scores are shown. 99, 100, 105, 104, 102, 105, 105, 121, 104 What is the median IQ score for this sample?

Put the 9 IQ scores in order: 99, 100, 102, 104, 104, 105, 105, 105, 121. With an odd number of scores, the median is the middle value, which is the 5th score. Therefore, the median is 104, choice D.

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