The sum of the absolute frequencies is equal to the total number of data, represented bas $$N$$. Relative frequency: the result of dividing the absolute frequency of a certain value by the total number of data.
exists and is an alternate of . Cats usually live up to around 15-17 years, but some can live over 20 years old. Cats usually live up to around 15-17 years, but some can live over 20 years old.
According to the Banfield State of Pet Health 2013 report, pets are living longer: The average lifespan of a cat in 2012 was 12 years, which has increased by 10 percent since 2002, adding a full year to a cat's life.