EXAMPLE 3.9 Select a Random Sample
Figure 3.2(a) gives the spreadsheet with the company names in column B. Only the first 12 of the 100 companies in the top 100 brands list are shown.
The random numbers generated by the RAND() function are given in the next column in Figure 3.2(b). The sorted data set is given in Figure 3.2(c). The 10 brands were selected for our random sample are Danone, Disney, Boeing, Home Depot, Nescafe, Mastercard, Gucci, Nintendo, Apple, and Credit Suisse.
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Figure 3.2: FIGURE 3.2 Selection of a simple random sample of brands using Excel, Example 3.9: (a) labels; (b) random numbers; (c) randomly sorted labels.