13	14	14	16	18	19	20
23	24	25	27	29	30	32
33	43	49	52	56	59	62

The table above gives ages of people in a sample. We will build a frequency distribution table with 5 classes, as shown in the Powerpoint notes. First, we apply the class width formula. Remember that: CW = (max- min)/(# of classes) = 6213 (do not round)

5 We always round the CW UP to the next integer, even if we initially get a whole number. So we will use CW =

Next, we find the LOWER LIMITS for each class, by starting with the minimum value and adding the class width vertically to start building the table:

Class	Lower Limit
1
2
3
4
5