بررسي رابطه ي بين گواهي هاي ايزو و سودآوري شركت هاي پذيرفته شده در بورس تهران

The Effect Of ISO Certifications On profitability Of Companies in Tehran Stock Exchange

In this research, the effect of ISO 9000 certification on these four factors was studied: return on assets, return on sales, gross profit margin and earning per share. The Statistical society of this research is the accepted companies in Tehran Stock Exchange which have succeeded in getting one of the ISO 9000 certification. The research samples have been chosen as random-classical. The regression on dummy variables has been used to test the research hypothesis. The results shows that there is a relationship between the ISO 9000 certification and return on assets, return on sales, gross profit margin, But there is no meaningful relationship between the ISO 9000 certification and earning per share.