ri -

To obtain standard errors (i.e., measures of uncertainty of the estimates),
use the array-entered LINEST worksheet function (see Help), or use the
Regression tool of the Analysis ToolPak (which can be installed from your
Excel/Office installation CD).

- Mike
www.mikemiddleton.com

"ri" wrote in message
...
Hi,
I want to get the uncertainty of the graph.
Withdata, I made a graph like y = ax +b, and got the apoloximately slope
and
the intercept.
Since these values are apoloximately, I want to get the uncertainties of
the
values.
Thanks,