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