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Explain about Bivariate analysis of Spectral Plots.
SPSS Statistics can analyze Spectral Plots from [Analyze]->[Forecasting]->[Spectral analysis]. We can set the following plot after check [Bivariate analysis - first variable with each] on Spectral Plots dialog.
- Squared coherency
- Cospectral density
- Quadrature spectrum
- Phase spectrum
- Cross amplitude
But because we don’t provide explanations about them (especialy how to interpretation) on PDF manual and online help, my customer can’t use them on Spectral Plots dialog.
Please add explanations about [Squared coherency][Cospectral density][Quadrature spectrum][Phase spectrum][Cross amplitude][Gain] on SPSS Statistics manual.
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