14.what value of n will result in a mean if 31
15.what value of n will result in a median of 23
15.what value of a will result in a range of 84
Refresh your memory about the defnition of median, mode and range of a set of numbers.
Then pick a value of n that satisfied the requirement.
For example, in #14. Find the value of n that makes the average 31. You should end up with the equation
(251+n)/9 = 31
Then solve for n. You divide by 9 because there are 9 numbers and you want the average or "mean" value.
We will be glad to critique your work.
math - Alondra, Tuesday, March 4, 2008 at 6:55pm