Relative Frequency Probabilities

Question

This month your roommate has helped do the daily dishes 8 times.

If it is the 29th day of the month, what is the chance that your roommate will do the dishes today (assuming the previous pattern mentioned above)?

 

%

Answer 1

This is a relative frequency probability question, which means we estimate the chance of something happening based on past data.

Your roommate has done the dishes 8 times in 28 days, so the estimated probability they’ll do the dishes on day 29 is:

P = 8 ÷ 28 = 0.2857,

or about 28.6%

This is just a prediction based on past patterns — not a guarantee.