@thesis{thesis,
		author={Murtiningtyas  Pradnya},
		title ={Analisis Pengaruh Rasio Keuangan Terhadap Perubahan Laba Pada Perusahaan Tambang Di Bursa Efek Indonesia Periode 2009 – 2013},
		year={2015},
		url={http://repository.ibs.ac.id/1289/},
		abstract={This research aims to knowing how financial ratios such as: current ratio, debt to equity ratio, inventory turnover, and net profit margin, give influence to the change in earning after tax. Samples of this research are mining and oil companies that listed on Indonesia Stock Exchange within the year of 2009 to 2013. The samples selected by using purposive sampling method. Total of samples are 50 data. The analysis method of this research is pooled data  regression  analysis.  The  result  of  this  reseach  shows  that  partially,  debt  to equity ratio and inventory turnover did not effected the change in earning after tax. While current  ratio  and  net  profit  margin  did.  Simultaneously,  current  ratio,  debt  to  equity ratio,  inventory  turnover,  and  net  profit  margin  are  not  effecting  the  change  in  earning after tax.
Keywoord: change in earning after tax, current ratio, debt to equity ratio, inventory turnover, net profit margin}
		}