HUBUNGAN ANTARA KELOMPOK REFERENSI DENGAN KEPUTUSAN PEMBELIAN SMARTPHONE SAMSUNG GALAXY PADA MAHASISWA PROGRAM STUDI PENDIDIKAN TATA NIAGA FAKULTAS EKONOMI DI UNIVERSITAS NEGERI JAKARTA

TALITHA RAHMAWATI, The Correlation Between Reference Group With Purchase Decision Study Program Of Commerce Education, Faculty Of Economics Sub-Distric In State University Of Jakarta This research was conducted in Study Program Of Commerce Education, Faculty Of Economics, State University Of Jakarta, for five months, starting from february 2016 to June 2016. The purpose of this study is to determine the relationship between the purchase decision to the reference group Smartphone Samsung Galaxy On Student Education Program Rules of Commerce, Faculty of Economics at the State University of Jakarta. The method used is survey method with the correlational approach, the population used is the Student Program trade system that uses the Smartphone Samsung Galaxy. The sampling technique used was by purposive many as 55 people. The resulting regression equation is Ŷ = 33.00 + 0,6002X. Test requirements analysis that estimates the error normality test regression of Y on X with the test Liliefors produce Lcount = 0.0860, while Ltable for n = 55 at 0.05 significant level is 0.11946. Because Lcount < Ltable the error estimates Y over X normal distribution. Linearity Regression Test generate Fcount < Ftable is 1.67 Ftable ie, 28.34> 4.03, so it can be inferred that the regression equation significantly. The correlation coefficient of Pearson product moment generating (rxy) = 0.590, then the correlation coefficient significance test was done by using the t test and the resulting tcount > ttable, tcount = 5.321 and ttable = 1.67. Thus, we can conclude that the correlation coefficient r xy = 0.590 is significant. The coefficient of determination obtained at 34.82%, which shows that 34.82% variable determined by the reference group purchasing decision