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NumXL for Microsoft Excel makes sense of time series analysis:

Build, validate, rank models, and forecast right in Excel
Keep the data, analysis and models linked together
Make and track changes instantly
Share your results by sending just one file

statistics of fit

RMSD

Calculates the root mean squared deviations (aka roor mean squared error (RMSEⁱ)) function.

RMSE

Calculates the root mean squared error (aka root mean squared deviation (RMSD)) function.

MAPE

Calculates the mean absolute percentage error (Deviation) function for the forecast and the eventual outcomes.

SAE

Calculates the sum of absolute errors (SAEⁱ) between the forecast and the eventual outcomes.

SSE

Calculates the sum of the squared errors of the prediction function.