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13. |
The set of data shows the number of times 20 students took public transportation last month. 1, 4, 5, 6, 6, 7, 7, 11, 11, 14, 15, 16, 16, 17, 17, 18, 19, 20, 22, 22 Make a frequency table using the intervals 0–6, 7–13, 14–20, 21–27. How many intervals are in the table? |