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5.2.5 Bullwhip effect: Managerial insigh

It is obvious that that the way the retailer estimates his future mean demand and variance (by forecasting) affects his orders and is one of the principal causes of the bullwhip effect. In supply chains spanning several echelons, the effect is a practical reality but mangers should look at ways to minimise the effect.

Look at Figure 4.8 on page 108 in your text. It is apparent that the bullwhip effect exists whether demand information across the supply chain is shared or not. However, the effect of information centralisation is positive as it reduces the variability compared to uncentralised information.

We have also seen that the increasing demand information variability across the supply chain is an increasing function of lead time, and safety stocks and a decreasing function of the number of observations used in the demand forecasting. These insights should help managers minimise bullwhip effects.

In your text

Read Case: Barilla Spa (B) and (C).

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