Business Statistics

204 Business Statistics

The second method is to calculate Poisson probabilities directly without obtaining individual

probabilities. Click f

x

to open the Insert Function dialog box. From Select a category, select Statis-

tical and from Statistical, select POISSON and then click OK (Figure 6.15). The Function Argu-

ments dialog box will appear on the screen. Now place the desired values as shown in Figure 6.16

(the process is similar to binomial distribution) and click OK. The probability value will appear on the

selected cell of the data sheet. Note that this time we have placed True in the Cumulative text box.

This gives us the probability ...