Tables available in P1F Seldom would anyone need all the tables available. If you have sample data, it might be good to try them all once, and keep a hard copy of the results to study. Then you can decide what tables you need for your problem. All tables are described, and examples given, in the BMD manual, from page 258 to 270. In addition, any current statistics text will be helpful in explaining the tables. For most purposes, three tables are sufficient; those giving the observed frequencies, the expected frequencies, and the percent each cell frequency is of the total frequency in the table. These three tables, indicated in the options as OB EX and TO are provided by the default; that is, by using the RETURN key alone.