For the below question I come up with a range of 13 (66-40=13) and a width of 3 (13/5=2.6,, round up to 3). My width range is wrong because I'm coming up with data that does not find any matching answer. What am I doing wrong?
Question: The following data set contains the heights (in inches) of 20 students in a high school Geometry class. Construct a frequency distribution using 5 classes. Which table below shows the relative frequency of each class?
40, 52, 46, 61, 53, 56, 48, 49, 52, 52, 54, 58, 62, 64, 65, 66, 62, 43, 52, 48