Statistical Evaluation of Seljukian Government Instability Causes

Due to military strength and territory extent, Seljukian government is one of the greatest governments of Iran history after Islam. Nevertheless, by Nezamolmolk murder and MalekShah death, Seljukian government declined, political instability began, and after the third Toghrol murder by Kharazm Shahian, the government collapsed. According to this point that the early overthrow and the weakness of Seljukian was the result of political instability, the evaluation and identification of origination and intensification related factors are very important in this historical era. The recent paper is an effort to respond to this question: what is the relationship between three indices of age of king when he was introduced as the king, age of king at death date and Seljuki kingship duration and political instability? To respond to this question, the author performed statistical analysis of indices as king age, date of king death and Seljuki kingship duration. The author’s statistical analysis shows that there is a positive correlation between kingship beginning at youth and long term kingship and political stability during the said historical era.