A manager at a bank conducted a study that looked at the relationship between Mudharabah Financing, Salam Financing and Fee Base Income on the Bank's Operating Income. The sample data that the Manager has collected are as follows: In Billion X1 Y X2 X3 YEAR Fee- Operating Income Mudharabah Financing Based Income Financing Regards 2000 100 32 30 7 2001 105 34 31 8 2002 108 35 33 8 2003 114 37 35 10 2004 118 39 35 10 2005 120 42 37 11 2006 127 44 39 13 2007 134 53 36 11 2008 142 55 38 10 2009 130 43 30 15 2010 137 43 32 14 2011 145 54 38 12 2012 152 60 38 13 2013 151 57 45 16 2014 135 45 42 15 2015 138 48 44 16 2016 141 49 44 14 2017 145 44 49 17 2018 146 45 46 17 2019 148 47 48 18 2020 144 47 50 15 1. Perform normality test by: (a). Test the Chi-Sqaure manually only (b). Test Liliefor manually only (c). The Kolomogorof smirnov test was carried out manually and using SPSS 2. Do the classical assumption test with the condition (a). Multicollinearity Test (b). Autocrelation Test Can use calculations using excel.