Sumproduct & Array Formula?

[Darren Hill]

I need a tricky function that I think needs to be entered as a Sumproduct
Array Function.

I have numerical data in a table A1:K11 (B2:K11 contains the data; A2:A11
= Row labels, B1:K1 = Column Labels)
What I need to do is, given an input column (B to K) and an output column
(B to K), perform the following calculation:
For each cell in input column
multiply by the sum of all cells below that cell's row in the output column
And add the final results.

So, for example, assume input column B and output column C, here's the
steps I'd need to do:
B2 * sum (C3:c11) +
B3 * sum (C4:c11) +
B4 * sum (C5:c11) +
B5 * sum (C6:c11) +
B6 * sum (C7:c11) +
B7 * sum (C8:c11) +
B8 * sum (C9:c11) +
B9 * sum (C10:c11) +
B10 * sum (C11:c11)

Notice how the number of cells in the sum drops by 1 as you step through
the input column's rows.
In case it matters, the data in each column adds up to 1; the value in
each cell is always greater than zero and less than 1.

Is this possible?
------------------
Darren

[Darren Hill]

Oops - posted this in the wrong newsgroup. Sorry.

Darren
On Wed, 07 Sep 2005 23:33:02 +0100, Darren Hill
<darren@cybersphere.plus.net> wrote:

> I need a tricky function that I think needs to be entered as a
> Sumproduct Array Function.
>
> I have numerical data in a table A1:K11 (B2:K11 contains the data;
> A2:A11 = Row labels, B1:K1 = Column Labels)
> What I need to do is, given an input column (B to K) and an output
> column (B to K), perform the following calculation:
> For each cell in input column
> multiply by the sum of all cells below that cell's row in the output
> column
> And add the final results.
>
> So, for example, assume input column B and output column C, here's the
> steps I'd need to do:
> B2 * sum (C3:c11) +
> B3 * sum (C4:c11) +
> B4 * sum (C5:c11) +
> B5 * sum (C6:c11) +
> B6 * sum (C7:c11) +
> B7 * sum (C8:c11) +
> B8 * sum (C9:c11) +
> B9 * sum (C10:c11) +
> B10 * sum (C11:c11)
>
> Notice how the number of cells in the sum drops by 1 as you step through
> the input column's rows.
> In case it matters, the data in each column adds up to 1; the value in
> each cell is always greater than zero and less than 1.
>
> Is this possible?
> ------------------
> Darren



--
------------------
Darren