Mathematics, 14.12.2020 20:10 ronaldo22
A group of 30 introductory statistics students took a 25-item test. The mean and standard deviation were computed; the standard deviation was 0. You know that. A. about half of the scores were above the mean B. the test was so hard that everyone missed all items c. a calculation error must have been made in determining the standard deviation D. everyone correctly answered the same number of items
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A group of 30 introductory statistics students took a 25-item test. The mean and standard deviation...
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