The explanatory method takes into account other data as input into the whole procedure of forecasting or sales management. However both the methods in quantitative technique incorporate the use of actual data available on the internet or field (Tyagi and Kumar, 2004, pp.One of the major advantage of quantitative techniques is that its simplicity. The method is based on statistical principles and its simple approach makes the outcome is easily accessible compared to the lengthy process of opinion based technique. The other advantage is that it is highly reliable method as it is based on existing data comprising of some element of predictability. The quantitative method is very objective and is based on sheer data and hence do not involve any subjective interpretation. The last advantage is that it helps in a more sales management. The disadvantages of the quantitative method are that it involves a very high cost, it even does include the intangible human factor in its approach, and it represents just the tool and do not facilitate the complete decision making process (Run, Fam and Srivastava, 2008, pp. The main advantage of the qualitative technique is that its predictable ability, since the opinions of experts are taken into consideration the method helps in predicting the necessary changes in the future sales patterns. It has the advantage of flexibility as it does not involve any numerical data. The other benefit is that it is a very useful approach when there is inadequate or ambiguous data. The major disadvantages of the qualitative approach is that it is very time consuming, have a selective perception as the experts involved in the techniques can simply ignore the relevant information so that it does not hinder their judgment about the future, and anchoring events through which the recent events influences the perception for future events and thus resulting into an opinion full of flaws (Armtrong, 2001, pp.TESCO supermarket utilizes these two approaches into their system so as to enhance their sales and productivity levels. The quantitative approach it can further implement is time series method this would help in matching its performance over the time. The qualitative approach that can be applied to this organization is Delphi method, in which some experts of the group or other from other industry can be involved and a survey can be conducted to analyze their opinions in order t have an effective sales management
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