How do I fit a sine wave to sound probe data with uncertainty in the coefficients?

[oxnume]

We did a lab that involved using sound probes that gave us a bunch of data points which we were able to plot into a waveform using excel. However, we have to determine the equation of the waveform and it is expected that we include the uncertainty of the coefficients (much like using the LINEST command in excel) so is there a way to do trig regression in excel or maybe MAPLE (which I already have but don't know how to use)?

 

[alexsb92]

I am actually looking for the same thing too! Anyone knows how to?

 

[Born2bwire]

Why bother? Measure/calculate/estimate the period, amplitude, phase and DC offset and you can get a good approximation from that. The plot looks fairly noise free and consistent in its data.

 

[oxnume]

Our teacher is very keen on the uncertainty :(