How To Find Out What Makes Your Customers Buy More Using

the Chi-Square Independence Test in Excel

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What Is the Chi-Square Independence Test?

● The Chi-Square Independence Test Determines Whether Two Attributes of One Object Are Related (Not Independent) ● We Will Use the Chi-Square Independence Test Here To Find Out If Order Size Is Related To the Time a Customer Spends On a Commercial Web Site

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The 3 Steps In the Chi-Square Independence Test in Excel

1) Arrange the Sample Data In a Contingency Table 2) Calculate the Chi-Square Statistic for the Sampled Data 3) Compare the Calculated Chi-Square Statistic With the Critical Chi-Square Statistic http://blog.excelmasterseries.com/

1) Arrange the Sample Data In a Contingency Table as Shown

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Calculate How Many Would Be Expected To Be In Each Group

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Comparing Expected With Actual

2) Calculate the Chi-Square Statistic for the Sample Data

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Calculate the Critical Chi-Square Statistic

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3) Compare the Calculated Chi-Square Statistic With the Critical Chi-Square Statistic

If the Calculated Chi-Square Statistic is Greater than the Critical Chi-Square Statistic, We Can Say With the Required Certainty (In This Case, 99% Certainty) That The 2 Attributes (Order Size and Time On Site) Are Related

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