Compute and interpret mean, median, range, and interquartile range in context.
Turn raw data into a statistical summary
Problem
Calculate the mean, median, and range of \(2,~4,~5,~5,~6,~7,~9,~\text{and}~10\).
Big Picture
What this problem is really about
Use the ordered list once to support all three summaries. Divide the total by the data count for mean, average the two central entries because the count is even, and subtract the endpoints for range. Labeling each calculation by its statistic prevents the two center values or the maximum and range from being confused.
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