Sumif/averageif With Multiple Ranges

I am trying to sum all numbers <0 using the SUMIF formula in Excel 2003.

FORMULA: =sumif(range,criteria,sum_range)

I got it to work, but I have cell ranges to total that are not next to each
other (such as A5:A15 and C5:C15).
When selecting the ranges for the formula, Excel writes them A5:A15,C5:C15

because of the comma (,) between the cell ranges Excel is reading the A5:A15
as the range and C5:C15 as the critera. How can I get this formula to allow
me to select multiple cell ranges?

All help is appreciated.

Thank you.

Hello,

I have two columns of data: column A contains the date and time in the form dd/mm/yyyy. Column B contains a number value. All the times are in order, so column A looks like:

01/01/2007
02/01/2007
03/01/2007

I have data from 2007 to 2010. I need to calculate an average daily value (in column B) for each month, and display it in column C. So, for January, I need to calculate the average of 31 days, February, 28 days, etc.

Is there a function I can use to do this? I've been trying the AVERAGEIF formula but can't get it to work. Any ideas would be much appreciated!

Many thanks,
Caitlin

Regarding Charts in Excel:

Is there a way to have the Min and Max values adjusted dynamically for the Scale of the values being displayed ??

I know that I can use named ranges to display various sections of data -- month by month, or quarter by quarter, for example.

But when the value of these ranges vary greatly from section to section I end of having to manually go and adjust the Min and Max values of the chart scale.

For example, if I was looking at a graph of the S&P 500's prices last November, a Min and Max range of 750 to 1200 would be fine. But if I had a dynamic range established and scrolled over to view the S&P 500's prices for this past February, I would need a Min and Max range of around 650 to 850.

Is there a way to have these Min & Max values adjust automatically depending on the values being displayed ??

Thanks

StanSz

I have a workbook that has recently changed on me and is causing a lot of grief. I have a lot of named ranges that the scope of the named range has changed to a new sheet. This is creating a lot of problems! Is there any way to manually change the scope of a named range? without deleting the nmaed range and recreating it?

I have cells in a column, some colored yellow, some not. I am trying to use
the SUMIF function to sum only the cells in the range that are colored. Can
this be done? Can I enter something in the "criteria" part of the formula
that can do this?

=SUMIF(D3:D13,"criteria",D3:D13)

I also tried to use the CELL function's color feature, but I couldn't get it
to work right. I don't know how to get Excel to recognize if a cell is
colored in a formula.
=CELL("color",cell)

It might just be that I don't know what this means in Help:

"color" --> 1 if the cell is formatted in color for negative values;
otherwise returns 0 (zero).

Can anyone help?