answersLogoWhite

0


Best Answer

Sum them : 340

Count them: 4 numbers

Divide sum by number of numbers = 340/4 = 85.

Alternatively, in this case, you may notice that the numbers are evenly spaced. The middle two numbers are 80 and 90 so halfway between then will be the overall mean. This only works for the arithmetic mean of evenly spaced numbers.

User Avatar

Wiki User

11y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: How do you find the average for 100 70 80 90?
Write your answer...
Submit
Still have questions?
magnify glass
imp