average of highest 48 of 52 radom numbers with duplicate low #'s

[Guest]

I must determine out of 52 radom numbers the average of the 48 highest even
if one or more of the lowest numbers is repeated 7 times without exempting
the 3 out of the 7 that must be included in the 48 to extract the average.

 

[Guest]

You may use this array formula:
=AVERAGE(LARGE(A1:A52,ROW(1:48)))
Enter it with Crt+Shift+Enter

 

[Bernard Liengme]

This will find the average with the four smallest excluded
=(SUM(A1:A52)-SMALL(A1:A52,1)-SMALL(A1:A52,2)-SMALL(A1:A52,3)-SMALL(A1:A52,4))/48
If there are, for example, 7 ones then the average is computed without 4 of
them.
Not sure what you want to do with duplicates.
Are the numbers integer (whole numbers); do you know the range before hand?
best wishes

 

[Guest]

I tried this array: it geave me the highest listed # and not the average...
thanks for trying

 

[Guest]

Here are some alternatives:

For numbers listed in A1:A52

B1: =(SUM(A1:A52)-SUM(SMALL(A1:A52,{1,2,3,4})))/48

OR
B1: =AVERAGE(LARGE(A1:A52,ROW(1:48)))
Note: for that array formula, hold down [Ctrl] and [Shift] when you press
[Enter].

Does that help?
***********
Regards,
Ron

XL2002, WinXP-Pro

 

[Guest]

Maybe it is because of the row formula. You may try this modification:
=AVERAGE(LARGE(A1:A52,ROW(INDIRECT("1:48"))))
Also, check that the formula is entered as an array formula (curly brackets
should appear on the formula bar)

Hope this helps,
Miguel.

 

[Guest]

I believe you have solved my delima. I do not need to use the 4 that are not
computed at all. I do know the range ahead of time..
This is to help me determine the anser to my annual report to the church I
pastor. I must give the average of the highest of 48 Sunday attendences out
of 52 Sundays. THANKS FOR YOUR SHARING YOUR KNOWLEDGE WITH ME. GOD BLESS

 

[Guest]

Thanks, the first formula works as I want it to. the 2nd only returns the
highest number in the list. I appreciated your help... GOD Bless You

Here are some alternatives:

For numbers listed in A1:A52

B1: =(SUM(A1:A52)-SUM(SMALL(A1:A52,{1,2,3,4})))/48

OR
B1: =AVERAGE(LARGE(A1:A52,ROW(1:48)))
Note: for that array formula, hold down [Ctrl] and [Shift] when you press
[Enter].

Does that help?
***********
Regards,
Ron

XL2002, WinXP-Pro

I must determine out of 52 radom numbers the average of the 48 highest even
if one or more of the lowest numbers is repeated 7 times without exempting
the 3 out of the 7 that must be included in the 48 to extract the average.