The following are scores made on a math test. 80, 90, 90, 85, 60, 70, 75, 85, 90, 60, 80 What is the range of these scores?

Answer: 30

Step-by-step explanation: The range is the difference between the greatest number in the data set and the least number in the data set.

Notice that 90 is the greatest number in the data set.

Also, notice that 60 is the least number in our data set.

So the range will be 90 - 60 or 30.

So the range of this data set is 30.