Average of a range, based on (i) a condition and (ii) the average per row

[Gijs]

To calculate the average of a range, based on (i) a condition and (ii) the average per row, I have:

Column A, the condition (John, Peter etc)
Column B, the frequency
Column C, is the total
I've looked at combining IF with =SUMPRODUCT, but SUMPRODUCT seems to only work with multiplying (percentages) whilst I first need to determine C divided by B. In desperation I created a helper,
Column D, to calculate the average per row =C/B
​

To calculate the required average of a range based on a condition I have formula =AVERAGEIF($A$2:$A$458,E9,$D$2:$D$458)

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Thanks in advance for the help!

 

[JustynaMK]

Hi,
Try the following Array formula (Ctrl+Shift+Enter):
=SUMPRODUCT(IF($A$2:$A$458=$E$9,$C$2:$C$458/$B$2:$B$458,0)/COUNTIF($A$2:$A$458,$E$9))

 

[JustynaMK]

Actually we can use the AVERAGE function as an array formula:
=AVERAGE(IF(A2:A10=F3,C2:C10/B2:B10))
Confirm with Control+Shift+Enter

 

[Aladin Akyurek]

Care to post an Excel readable small sample along with the expected result for that sample?

 

[Gijs]

Thanks JustynaMK! Good morning. I love the simplicity of the AVERAGE IF solution.

A bug with empty cells in Column B, I have fixed with IFERROR:
=IFERROR(AVERAGE(IF(A2:A10=F2,C2:C10/B2:B10)),"")

Whilst the error message has been resolved, what I have not been able to fix is zeros or blanks in Column C, which distorts the result. Is there a way to squeeze that condition in?

 

[Gijs]

Hartelijk dank Aladin, for reaching out. I've copy/pasted the page; I can't upload a sample xls - if you can provide me with your email, I gladly send it to you.

A	B	C	D		F	G		I
Condition	frequency	sum	average		criteria	average		average w/helper column D (needed result)
John	1	20	20		John	17.5		23.33333333
John	2	40	20		Peter	40		40
John	3	90	30
Peter	5	200	40
John	100		0

<tbody>
</tbody>

The formula in Column G reads: =IFERROR(AVERAGE(IF($A$3:$A$11=$F3,$C$3:$C$11/$B$3:$B$11)),"")
The desired result is in Column I (with helper Column D): =IFERROR(AVERAGEIF($A$3:$A$6,F3,$D$3:$D$6),"")

Whilst the error message has been resolved, what I have not been able to fix is zeros or blanks in Column C, which distorts the result. Is there a way to squeeze that condition in?

 

[KolGuyXcel]

How is I3 displaying 23.33333?

I'm getting 17.5 with =AVERAGEIF($A$3:$A$11,F3,$D$3:$D$11) in I3, assuming F3 has the same value as E9! Also, some of the bottom rows in the data set is completely blank! So I must be missing some data to get 23.333!

 

[AhoyNC]

Maybe:

Excel Workbook
	A	B	C	D	E	F	G
1	Condition	frequency	sum	average		criteria	average
2							w/helper
3	John	1	20	20		John	23.3333333
4	John	2	40	20		Peter	40
5	John	3	90	30
6	Peter	5	200	40
7	John	100		0
Sheet

 

[Gijs]

Thanks for helping out KolGuyXcel

I get the same (17.5) result as you just described with =AVERAGEIF($A$3:$A$11,F3,$D$3:$D$11). The formula I however used in the post is =IFERROR(AVERAGEIF($A$3:$A$6,F3,$D$3:$D$6),"") i.e. a shorter range to illustrate the 23.33333 result I'm looking for when there are no zeros or blanks in Column C.

Is there a possibility to build on =IFERROR(AVERAGE(IF($A$3:$A$11=$F3,$C$3:$C$11/$B$3:$B$11)),""), i.e. delivering the required 23.33333 result, eliminate the zeros or blanks in Column C and WITHOUT support column D? Or do I need to look for an entirely different approach (or in desperation stay with support column D)?

 

[Gijs]

Maybe:

	A	B	C	D	E	F	G
1	Condition	frequency	sum	average		criteria	average
2							w/helper
3	John	1	20	20		John	23.3333333
4	John	2	40	20		Peter	40
5	John	3	90	30
6	Peter	5	200	40
7	John	100		0

<tbody>
</tbody>

Spreadsheet Formulas

Cell Formula G3 =AVERAGEIFS($D$3:$D$7,$A$3:$A$7,$F3,$D$3:$D$7,">0") G4 =AVERAGEIFS($D$3:$D$7,$A$3:$A$7,$F4,$D$3:$D$7,">0") <tbody> </tbody>

<tbody>
</tbody>

Excel tables to the web >> Excel Jeanie HTML 4

AhoyNC, that formula will definitely work, but it requires utilizing support column D, which I was hoping to avoid.

Whilst =IFERROR(AVERAGE(IF($A$3:$A$11=$F3,$C$3:$C$11/$B$3:$B$11)),"") does the trick without support column D, it includes zeros or blanks in Column C, which I need to avoid as it distorts the result. Do I need to look for an entirely different approach or in desperation stay with support column D?

Thanks for your help and efforts AhoyNC, greatly appreciated!