Relative frequency probability

To find the relative frequencies, divide each frequency by the total number of students in the sample –in this case, 20. Relative frequencies can be written as fractions, percents, or decimals. Cumulative relative frequency is the accumulation of the previous relative frequencies.

Frequency is a way to measure how often a particular event occurs. Relative frequency on the other hand is a way to measure how often a particular event occurs against total occurrences .