As part of an effort to reduce patient costs, a hospital analyzes the number of visits by a nurse for 13 patients over a ten-day period.  The average number of nurse visits per day for these patients is given below.  Construct a frequency table with 4 classes for these values, using the minimum value in the dataset as the lowest class limit in your calculations.   3.6,3.7,4.0,4.2,4.3,4.6,5.1,5.2,5.5,6.7,7.2,8.7,13.0

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