WhichForecast for Excel
Which forecast fits your data?
A modern Microsoft Excel add-in for guided time-series forecasting. Select a series, set a goal, and WhichForecast profiles the series, ranks candidate methods with a rolling-origin MASE backtest, and writes charts and errors back to the workbook — fully offline. Educational only: not investment advice.
Series profile first
Trend, seasonality, intermittency (ADI/CV²), and gaps — before any method is chosen, with a transparent Candidate Policy.
Honest ranking
Rolling-origin MASE among candidates. MAPE is warned when zeros would lie. Forecast Value Added vs naive.
Croston family
Spare parts and lumpy demand are first-class, unlike Excel Forecast Sheet.
Method DNA + Learn
Plain-language identity cards and Student / Planner / Formal copy at every step.
Demand, inventory, weather, FX, energy — one engine. The wizard infers series nature. Not three separate apps.
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