Seta Forbes, Marketing Director of Auckland Motors’ Electrical Division, is leading a study to assess the relative importance of product features. An item on a survey questionnaire distributed to 100 Auckland customers asked them to rate the importance of ‘efficiency of operation’ on a scale of 1 to 10 (with 1 meaning ‘not important’ and 10 meaning ‘highly important’). His staff assembled the following statistics. If Seta concludes that the average rate of ‘efficiency of operation’ for all customers is 6.0, he is using ________.
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