No matter whether you are testing a new marketing campaign or evaluating your current level of customer service, you want to be sure that you base your analysis on a reliable sample of your customers.
For example, you would like to use a random sample of 200 of your 1,000 customers in your analysis. You have an alphanumeric list of those customers in Column B of your Excel Customer Data worksheet, so to obtain a random list, follow these steps:
- Insert a new column to the right of Column B.
- Enter Customer No. in C1.
- Click in C2 and press [Ctrl][Shift][End].
- Type =RAND() and then press [Ctrl][Enter].
- Select C1.
- Click the AZ (sort) button in the Standard toolbar.
- Delete Column C.
Column C now associates a random Customer No. between 0 and 1 for each customer in the list. Thus, sorting the worksheet in Column C randomly sorts the customer data in Column B, from which you can choose the first 200 for your sample.
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