TIME SERIES ANALYSIS / FIT
One curve. All the points.
Start with the points. Show the fit when you’re ready.
Observations
Points only
Observations
Fitted curve
Residuals
Generating curve
Drag a point up or down, or focus it with Tab and use the arrow keys.
The vertical scale stays with the points. High-degree curves can swing far beyond them and leave the plot.
Shaded regions are outside the observed time range. Predictions there may leave the plot; S still measures errors only at the observed points.
Sum of squared residuals S
Coefficients to fit
Observations
Displayed coefficients are rounded; S uses the full-precision fit.
Reproduce this fit in Python
This uses the points currently on the graph, including any you moved.