Difficult (for me) question about conditional SUM

[kayard]

Hi, I'm back again asking for some help.

I have in column A and B 2 formulas that evaluate to either true or
false. In column C I have a number. Say that I have 1000 rows; i want
to sum only those values in column C where valuels in column A and B
in the same row are both true.

Of course I can create a new column D where I AND booleans in A and B
but This would make me create a new column ... I do not want this
because in my file I have many many pairs of A & B. So I would have to
create at least 25 more columns containing AND formulas...

I need something that doesn't oblige me to create any new column

Thanks in advance for any help

Sorry for my english, I hope I have made myself understood.

Paolo

Italy

 

[Conan Kelly]

kayard,

You might try this:

=sumproduct(($A$1:$A$1000=TRUE)*($B$1:$B$1000=TRUE)*($C$1:$C$1000))

OR

=sumproduct(($A$1:$A$1000="TRUE")*($B$1:$B$1000="TRUE")*($C$1:$C$1000))

Hopefully one of those will work for you.

I hope this helps,

Conan

 

[NickHK]

You don't need to explicitly test for True. Use the fact that True=1 and
False=0 (on Excel worksheets anyway);
=SUMPRODUCT(A1:A9*B1:B9*C1:C9)

NickHK

 

[kayard]

thanks, but I actually have to make it even harder.

Let's make this example. I have column A containing either true o
fals

 

[NickHK]

Not sure I understand the problem.
See the values of :
=True*True*100
=False*True*100
=False*False*100

NickHK

 

[kayard]

I'll try to explain better.

I have in A1:A100 either numbers or #N/A. In B1:B100 there is eithe
TRUE or FALSE. I want to calculate the average of A1:A100 but only o
those rows where there is an actual number (Not #N/A) and wher
condition in column B is true.

Thank

 

[kayard]

I'll try to explain better.

I have in A1:A100 either numbers or #N/A. In B1:B100 there is eithe
TRUE or FALSE. I want to calculate the average of A1:A100 but only o
those rows where there is an actual number (Not #N/A) and wher
condition in column B is true.

Thank