Keywords: time series, sum of sinusoids, discrete spectra
The data give the magnitudes of a variable star at midnight on 600 consecutive nights.
|Star||Magnitude on each night|
Data File (tab-delimited text)
|Whittaker, E. T., and Robinson, G. (1924). The Calculus of Observations. English Universities Press, London.|
Bloomfield, P. (1976). Fourier Analysis of Time Series: An Introduction. Wiley, New York.
Data contributed by Kit Bingham, University of Minnesota.
A constant plus a sum of two sinusoids gives an almost perfect fit. As Bloomfield implies on page 25 of his book, the fit is actually so good as to be suspicious.