Answered: Simple exponential smoothing (with a…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Simple exponential smoothing (with a 0.2) is beingused to forecast monthly beer sales at Gordon’s LiquorStore. After observing April’s demand, the predicted demandfor May is 4,000 cans of beer.a At the beginning of May, what is the prediction forJuly’s beer sales?b Actual demand during May and June is as follows:May, 4,500 cans of beer; June, 3,500 cans of beer. Afterobserving June’s demand, what is the forecast for July’sdemand?c The demand during May and June averages out to4,50023,500 4,000 cans per month. This is the same asthe forecast for monthly sales before we observed theMay and June data. Yet after observing the May andJune demands for beer, our forecast for July demand hasdecreased from what it was at the end of April. Why?

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