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Tabel 2. Perhitungan regresi Tabel 3. Titik ko X Y Xi Yi xi2 XiYi X Y 0 0 -5 -0.75 25 3.75 0 -2.7 2 0.542 -3 -0.21 9 0.629 2 -2.46 4 0.588 -1 -0.16 1 0.163667 4 -2.22 6 1.142 1 0.39 1 0.390333 6 -1.98 8 1.027 3 0.28 9 0.826 8 -1.74 10 1.211 5 0.46 25 2.296667 10 -1.5 30 4.51 0 0.0017 70 8.06 5 0.75 Konsentrasi sampe a = A (Y+b)/a = (1.148+2. 0.12 33.43733 B (Y+b)/a (0.583+2. b = 27.35833 = -2.70 y = 0.12x-2.70

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Sheet1Tabel 2. Perhitungan regresiTabel 3. Titik koordinat XYXiYixi2XiYiXY00-5-0.75253.750-2.720.542-3-0.2190.6292-2.4640.588-1-0.1610.16366666674-2.2261.14210.3910.39033333336-1.9881.02730.2890.8268-1.74101.21150.46252.296666666710-1.5304.5100.0017708.0650.75Konsentrasi sampela =A =(Y+b)/a = =(1.148+2.7)/0.12 =0.12 =33.4373318989B =(Y+b)/a =(0.583+2.7)/0.12b = =27.3583333333 = =-2.70y = =0.12x-2.70

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