Italian Tours ofters a daily sightseeing trip around Florence. The list below gives the number of people who made the trip for a selection of 9 summer days. Find the range of the data set.

To find the range of the dataset, you first need to identify the highest and lowest values in the list of the number of people who made the trip. Subtract the minimum value from the maximum value. This simple calculation gives you the range, which tells you how much variability there is in the number of people taking the trip on those particular days. Remember, range = maximum - minimum! So, if you had a day with 150 people and another with 70, the calculation would look like this: 150 - 70 = 80. The range of this dataset would be 80, highlighting the difference between the busiest and least busy days!