Marketing
Demand forecasting
Demand forecasting is an area of predictive analytics that seeks to estimate the quantity of a product or service your consumers are likely to buy.
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Demand forecasting vs Statistical methods of demand forecasting
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Strategy
Statistical methods of demand forecasting
A practical introduction to trend projection, regression and indicator-based forecasting for strengthening demand analysis.
Read articleChoice logic
Use this when.
How many units of each product may sell in the coming months?
Use statistical methods when the HOOF approach would benefit from stronger evidence, particularly when estimating historical growth or testing the relationship between demand and an external driver.
Extracted signals
Strengths, limits, and pitfalls.
Demand forecasting
- Measure forecast error by product, location and horizon, then investigate bias separately from random variation. Clean, timely data are essential, but a disciplined feedback loop—forecast, observe, diagnose and update—is what improves planning over time.
- Past sales are only one signal. Search activity, product discussions, reviews, social text, price, distribution and test market results may improve the estimate, especially for changing or new categories. Google Trends can reveal shifts in attention, but attention is not identical to purchase demand and must be validated against actual outcomes.
Watch for
- Do not mistake sales for unconstrained demand. A promotion can create a temporary spike, while a stock out can hide purchases customers wanted to make. Record price, promotion, availability, weather and seasonal effects so that one off or constrained observations are not projected as the normal future.
Statistical methods of demand forecasting
- Begin with a causal question and a clean historical series. A sophisticated calculation cannot rescue an incoherent market boundary or unreliable input data.
- A trend line summarises the direction of observations plotted over time:
- Set out annual market demand data.
Watch for
- Do not assume that a past trend, regression or indicator relationship will continue. State the mechanism, test alternative drivers and make structural change explicit.
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