Average,Countif

[M.A.Tyler]

{=AVERAGE(IF((MOD(ROW(CLM10000!C3:C646),7)=3)*(C3:C646<>""),C3:C646))}

I have this entered in cell Adjust PtsC1. As I understand it it gives the
average of a column using the data in every 7th row, starting with the 3rd
row. It seems to work well, but my problem is when I try to drag it down
(even with Ctrl+Drag).

I've changed the formula
{=AVERAGE(IF((MOD(ROW(CLM10000!C3:C646),7)=4)*(C3:C646<>""),C3:C646))}, so it
should use every 7th row starting with the 4th row. Is there a trick to
copying, pasting or moving Array formulas?

Any help? Thanks!

 

[T. Valko]

How far down do you want to copy it?

You can have the MOD comparison increment from 3 to 4 then 5, 6. When it
increments to 7 or greater you'll get errors.

Biff

 

[M.A.Tyler]

Thats exactly where I'm at. I need to be able to get to 7.

 

[Roger Govier]

Hi

Isn't your problem just that you have not made the references absolute
{=AVERAGE(IF((MOD(ROW(CLM10000!$C$3:$C$646),7)=4)*($C$3:$C$646<>""),$C$3:$C$646))}

 

[T. Valko]

Well, you can't get to 7 with that formula. The MOD function is used to
count the rows in increments of 7. Everytime the 7th row is reached the mod
restarts at 0 and starts to count "up" again. Like this:

3,4,5,6,0,1,2,3,4,5,6,0,1,2,3,4,5,6,0

If you want the same pattern, every 7th row, *starting* from the 3rd row and
then incrementing as you drag down, maybe this:

=AVERAGE(IF((MOD(ROW(CLM10000!C3:C$646),7)=3)*(C3:C$646<>""),C3:C$646))

Biff

 

[M.A.Tyler]

It figures that the last row I need would be the problem. When I tried your
suggestion it gives me a circular reference. I think this is because of this
=IF(C1>1,INT(C1/100)*60+MOD(C1,100),"") which is in cell S1. It changes the
time from say 111.00 to 71 seconds. So if there were a way to incorporate
{=AVERAGE(IF((MOD(ROW(CLM10000!$C$3:$C$640),7)=3)*(CLM10000!$C$3:$C$640<>""),CLM10000!$C$3:$C$640))}
with ,=IF(C1>1,INT(C1/100)*60+MOD(C1,100),"") it might help.

Is that possible?

 

[T. Valko]

If you were to give us a more detailed explanation of what cells you want to
average it would help.

Using your original formula you want to average rows 3, 10, 17, 24, 31 etc.

Now you want to copy the formula down. What rows do you want averaged for
this? And how many rows down will the formula be copied to? Is there any
unique identifier to what rows need averaged? Maybe something like a date.
I'm guessing that since you're working in increments of 7 this is for
weekdays or weekly data? So, you want the average of all Mondays? If there
were an identifier like this it would be much easier than calculating
offsets using MOD(ROW()).

Biff

 

[M.A.Tyler]

OK. Column B is set up like this:
ALB
1st
2nd
3rd
4th
AP
1st
2nd
3rd
4th
ASD
1st
2nd
3rd
4th
Each identifier has 4 subsequent sub-catagories, labled 1st, 2nd, 3rd, 4th.
What I need to accomplish is first calculating an average of all the
identifiers (ALB+AP+ASD/3) not counting any 0 or empty cells. Then repeat for
the 1st's, 2nd's and so on. Since all of the sub-catagories are the same the
only way to identify is by the idendtifier thus the Mod(row()). I'm not stuck
on doing it this way, open to suggestiongs.

Thanks,

MT.

 

[Roger Govier]

Hi

Why not create a helper column, I used column D
In the 1st cell of the helper column enter
=B2&"0"
in the second cell enter
=IF(ISNUMBER(--(LEFT(B2))),LEFT(C1,LEN(C1)-1)&LEFT(B2),B2&"0")
and copy down
You will now have ALB0, ALB1, ALB2, ALB3,ALB4,AP0, AP1 etc.

Now you can just use
{=AVERAGE(IF($C$1:$C$646=$C1,$D$1:$D$646,""))}

Adjust ranges to suit.

 

[T. Valko]

Based on that sample from column B the increment is not 7 rows, it's 5. So,
I'm guessing you left something out, maybe 2 empty rows between sets?

So what you need are 5 formulas, or, 1 formula copied to 5 cells.

Avg all identifiers
Avg all 1st
Avg all 2nd
Avg all 3rd
Avg all 4th

Take a look at this sample file. 1 formula copied to 5 cells.

http://cjoint.com/?ggfKyB4xNF

Biff

 

[M.A.Tyler]

Your correct I did leave two rows out because I'm just not using them, sorry
for that confusion. Your solution looks perfect and I've messed around with
it some, however I can't seem to get it to work? Perhaps it's because the
data is on sheet CL10000! and I'm attempting to have the averages appear on
sheet ADJ PTS! So the range to be averaged is CL10000!C3:C644 every 7th row,
or rows 3,7,10...With the averages to appear on sheet ADJ PTS!C1:C5
identifier C1,1st C2, 2nd C3,3rd C4, 4th C5...Then I would need to copy
across thru column Q. Is that possible?