We can represent the results of the 1 Proportion test in the previous example using a probability distribution plot. Using the binomial distribution, we can show where the results of the study are in relation to the historical figures of 25 percent.
Following on from the previous example, we will use the figures of 92 students in total, out of which 28 smoke regularly. It is not necessary to open the dataset but it may be beneficial to run the previous example to compare the results.
The following steps will use probability distribution plots to generate a binomial distribution for 92 trials and an event probability of 0.25:
Go to the Graph menu and select Probability Distribution Plot….
Select the View Probability graph.
From the dropdown for Distribution:, select Binomial.
Under Number of trials:, enter
92
and for Event probability:, enter the hypothesized probability of0.25
.Select the tab for Shaded Area, choose X Value...