Any advice on this would be graetfully received. I have set trend lines and
now wish to calculate an overalll % increase or decrease in the slope

Hi Sue,

John Walkenbach shows all the equations here.
http://j-walk.com/ss///excel/tips/tip101.htm

You also may want to check out the TREND and FORECAST
functions in the helpfile.

Post back if you are having trouble applying them.
Don't forget to include details of your data and
what you are trying to achieve.

HTH
Martin



"Sue" wrote in message
...
Any advice on this would be graetfully received. I have set trend lines
and
now wish to calculate an overalll % increase or decrease in the slope

If you have a trendline, you can right click on it, choose Format, and on
the Options tab, check Show Formula on Chart. Increase the decimals in the
formula (use the Increase Decimals button or right click the formula, choose
Format, and on the Number tab choose a Number format with lots of decimal
places or a scientific format with lots of decimal places). Pick your slope
from the modified formula. Or use the SLOPE worksheet function on the chart
data in the worksheet to calculate the slope more directly.

- Jon
-------
Jon Peltier, Microsoft Excel MVP
Tutorials and Custom Solutions
Peltier Technical Services, Inc. - http://PeltierTech.com
_______


"Sue" wrote in message
...
Any advice on this would be graetfully received. I have set trend lines
and
now wish to calculate an overalll % increase or decrease in the slope