Frequency representation can also be helpful in keeping track of classes and statistical information. Picture a scenario where every 500 out of 1000 people die due to lung cancer. However, 40 of those 1000 were smokers and 20 out of the 40 had a genetic condition predisposed to possible lung cancer. Such class division and information storage can only be done using frequency format, since a number .05% probability of having lung cancer does not give any information or allow to calculate such information.
