Least square method to find linear regression equation

Others 2022-04-27 13:47:06 views: 0

Four sets of numbers (1,2) (2,4) (3,5) (4,7)

xAverage=(1+2+3+4)/4=2.5

y average=(2+4+5+7)/4=4.5

b=(53-4*2.5*4.5)/(30-4*2.5²)=8/5=1.6

a=4.5-1.6*2.5=0.5

∴The regression line is y=1.6x+0.5

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