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Calculate Average Of A Specific Subset Of Cells Within A Given Range

Hi,

I have columns of varying lengths. I would like to average the values within a defined fraction of each column. For instance, if I wanted the first 20% of the length, I would want average(A1:A5) of a column with 25 values, but average(A1:A10) for a column with 50 values.

I can use count() to determine the length of the column of values.

How can I specify a range of cells based on the result of that calculation?

Thanks.
Tom

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Hi,

Try this...

There are some valid datas in the cells A2 (Eg. 100), B2(Eg. 200), C2 and D2.
Data validation is used in cell K2 to limit it to a set of values.

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{
A2=A3; B2=B3; C2=C3; D2=D3; K2=K3;
}
ELSE
{
no change to any values.
}

Thanks in advance...


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I am brand new to Mr. Excel and would love some advice.

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