SOLUTION: I need help with this problem because I don't see how I can figure out a mean if the remaining scores are not given. Please help and explain the logic. Thanks! The arithmetic

Algebra ->  Average -> SOLUTION: I need help with this problem because I don't see how I can figure out a mean if the remaining scores are not given. Please help and explain the logic. Thanks! The arithmetic       Log On


   

Question 356809: I need help with this problem because I don't see how I can figure out a mean if the remaining scores are not given. Please help and explain the logic. Thanks!

The arithmetic mean of 10 test scores is 90. The top and bottom scores (55,98)are eliminated. What is the mean of the remaining set of scores?
Found 2 solutions by Fombitz, stanbon:
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
%28A%2BB%2BC%2BD%2BE%2BF%2BG%2BH%2BI%2BJ%29%2F10=90
A%2BB%2BC%2BD%2BE%2BF%2BG%2BH%2BI%2BJ=900
.
.
55%2BB%2BC%2BD%2BE%2BF%2BG%2BH%2BI%2B98=900
B%2BC%2BD%2BE%2BF%2BG%2BH%2BI=747
Now find the average,
%28B%2BC%2BD%2BE%2BF%2BG%2BH%2BI%29%2F8=747%2F8
highlight%28%28B%2BC%2BD%2BE%2BF%2BG%2BH%2BI%29%2F8=93.375%29

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!

The arithmetic mean of 10 test scores is 90. The top and bottom scores (55,98)are eliminated. What is the mean of the remaining set of scores?
-----------------------------------
mean = (total points)/(# of scores)
---
90 = total points)/10
---
total points = 900
--------------------
Subtract the two given scores:
900 - 98-55 = 747
------
Divide by 8 to get mean of remaining set:
747/8 = 93.375
========================
Cheers,
Stan H.