{20, 30, 40, 50, 60, 70, 80}
The mean of this set of numbers is?
50
To find the mean (average) of a set of numbers, you need to add up all the numbers in the set and then divide the sum by the total count of numbers.
So, let's calculate the mean of the set {20, 30, 40, 50, 60, 70, 80}:
Step 1: Add up all the numbers: 20 + 30 + 40 + 50 + 60 + 70 + 80 = 350
Step 2: Count the total numbers in the set: 7
Step 3: Divide the sum by the count: 350 / 7 = 50
Therefore, the mean of the set is 50.