Fathul M. Rusdi; 09 5301 0007; Tugas Matrek 2

x	y	x²	x³	x⁴	xy	x²y
1	127	1	1	1	127	127
3	257	9	27	81	771	2313
5	377	25	125	625	1885	9425
7	557	49	343	2401	3899	27293
9	767	81	729	6561	6903	62127
11	987	121	1331	14641	10857	119427
13	1267	169	2197	28561	16471	214123
15	1847	225	3375	50625	27705	415575
64	6186	680	8128	103496	68618	850410

a )

Jadi Model matematikanya adalah y = 113.869 x - 137.702

b )

Jadi Model matematikanya adalah y = 4.765 x² + 43.951 x

c )

Jadi Model matematikanya adalah y = 6.89 x² + 3.631 x + 158.562

 

a			b			c
ŷ	y - ŷ	( y - ŷ )²	ŷ	y - ŷ	( y - ŷ )²	ŷ	y - ŷ	( y - ŷ )²
-23.833	150.833	22750.5939	48.716	78.284	6128.38466	169.083	-42.083	1770.97889
203.905	53.095	2819.07903	174.738	82.262	6767.03664	231.465	25.535	652.036225
431.643	-54.643	2985.85745	338.88	38.12	1453.1344	348.967	28.033	785.849089
659.381	-102.381	10481.8692	541.142	15.858	251.476164	521.589	35.411	1253.93892
887.119	-120.119	14428.5742	781.524	-14.524	210.946576	749.331	17.669	312.193561
1114.857	-127.857	16347.4124	1060.026	-73.026	5332.79668	1032.193	-45.193	2042.40725
1342.595	-75.595	5714.60403	1376.648	-109.648	12022.6839	1370.175	-103.175	10645.0806
1570.333	276.667	76544.6289	1731.39	115.61	13365.6721	1763.277	83.723	7009.54073
6186	0	152072.619	6053.064	132.936	45532.1311	6186.08	-0.08	24472.0253

a )           SD           =

                                = 10862.329932

b )           SD           =

                                = 3252.29508

c )           SD           =

                                = 1748.00180628571

Jadi persamaan yang paling tepat adalah y = 6.89 x² + 3.631 x + 158.562