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Extrapolation of x value from the trendline of a non-linear graph
Hi I was wondering if it is possible to extrapolate the x value from a given
y value on a scatterplot graph? I would like to extrapolate the value from the trendline produced using the 'moving average' trendline. The trendline is sigmoidal shaped This trendline doesn't let me produce an equation so I can't figure out the x value that way If I can't find the x value of the trendline, even the line formed by the data points would be good Thanks in advance for your help |
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Extrapolation of x value from the trendline of a non-linear graph
When you use the Moving Average feature you are not really making a trend
line but just plotting the average of a number of adjacent values to smooth the data. The data is not fitted to a mathematical model (function) so there is no equation as you correctly point out. No equation means there is no prediction. best wishes -- Bernard V Liengme Microsoft Excel MVP http://people.stfx.ca/bliengme remove caps from email "snifter" wrote in message ... Hi I was wondering if it is possible to extrapolate the x value from a given y value on a scatterplot graph? I would like to extrapolate the value from the trendline produced using the 'moving average' trendline. The trendline is sigmoidal shaped This trendline doesn't let me produce an equation so I can't figure out the x value that way If I can't find the x value of the trendline, even the line formed by the data points would be good Thanks in advance for your help |
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