Add all the individual frequencies together. Cumulative frequency begins at 0 and adds up the frequencies as you move through your list. The word frequency alone is not very clear.
How to Calculate Relative Frequency.
Large RelativeFrequencyfrac f n. The cumulative relative frequency is equal to the some of the relative frequencies of all the previous intervals including the current interval. Cumulative Relative Frequency for 7 or less is eq1 eq Relative frequency of adults who flossed 6 times a week is 005 Thus the percent of adults who flossed six times a week is eq5 eq. The cumulative relative frequency similarly sums up the relative frequencies up to and including the given relative frequency.