Using SPSS in literaly researches

In the most of recent Iranian literary researches which use statistical analyses، only a specific part of statistics، i. e. descriptive statistics، is used. It seems that another important part (inferential statistics) is missed in these researches. SPSS is a powerful software package used for statistical analysis in social sciences. This software، at first، is designed for statistical analyzes at social sciences but for it''s easy environment، it spread between users and With the increasing needs of users، the abilities of software increase too. One of the most important capabilities of it is doing inferential statistics. Almost all kinds of statistical analyses may be done by it. This paper tries to introduce SPSS to the researchers of literature and show the weaknesses of some literary researches and suggests to this group of researchers to use the methods of inferential statistics which are more accurate than the methods of descriptive statistics.