How to Do Nonlinear Interpolation Using Trendline in Excel
When the data is not linear, the first thing we have to do is to find out the function's behavior. Using the Trendline, Excel can fit exponential, logarithmic, and polynomial equations to the data.
In this video, we'll show you how to interpolate nonlinear data; as you can see, we have the corresponding value to the numbers 17 and 19 in our table; now, let's find y when x=18.1.
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