You could find an equation that fits the data (see trendline)
best wishes

--
Bernard V Liengme
www.stfx.ca/people/bliengme
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"ralph" wrote in message
...
In an xy scatter plot one can choose the type of line connecting the data
points (smooth, straight, etc.). Once this is done, Is there a simple way
of
determining the y value of graph for a specific x value without doing
successive approximations with 0 shifts. I'd rather not purchase a
graphing
program just for this simple task.