The mode is the number that appears the most n a data set. 8 appears the most in this data set so it's the mode. The range is the difference between the largest and the smallest number. The largest number is 8 and the smallest number is 2. 8 - 2 = 6 so that's the range.
30% of 10,000 is 3,000, so the salesperson would have sold the boat for $13,000. The difference between the auction price and dealership price is 3,000. The commission is 25% of 3,000, which is $750.
