A data set has values ranging from a low of 10 to a high of

A data set has values ranging from a low of 10 to a high of 50. The class width is to be 10. What\'s wrong with using the class limits 10-20, 21-31, 32-42, 43-53 for a frequency table with a class width of 10?

Solution

In this case the class width is 11

in class interval 10-21 we included 10,11,12,13,14,15,16,17,18,19,20 which take 11 values.