Today package programs are popular in solving problems. Many kind of work, especially in research require proper statistics to analyze and sumarize. Thus, it is necessary to use computer in a large number of data such as a large number of population. Therefore, men have tired to find the way to build package programs and there are about 55 programs generally use now. In Thailand there are only three package programs which we often use; They are BMDP program, SAS program and SPSS program. These three programs can analize every step or statistics. This research aim to compare the use of three package programs by studying their instructions as well as from the users. Then this research has tired to use them in analyzing nine items of statistic which are the same. After that this work will show the result of the experiment and will tell which is the most capable and sufficient program in any kind of work of statistic. It’s true; it is not right to say this program is better than those two because each program is built for special purpose. In another way we can say that which program is the most capable wether we use them in the same kind of work. The searched result of the same nine kinds of statistics work can be concluded that the BMDP program has supreme capability because of its being able to tell the various details including some essential statistic value. But there is no different capability in the SAS and SPSS program. If we, however, consider in difficulty and easinese of the program usage, both writing and variety, the BMDP program order will be written very easy but it is very hard in the SPSS program. To a certain extend there is no variation among these three programs at all. Owing to each program has been tried to use in different computer centres and the same package program is newly built or improved again and again. The above reason may cause this research imperfect. It would be better if anyone who wants to use them try to find the latest package program of the same kind and use them in the same computer centre.
