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1 votes
1 votes

Using given data ponts tabulated below a straight line  passing through origin is fitted using least squares method the slope of the line is

x    1         2              3
y   1.5       2.2          2.7
 

  • .9
  • 1
  • 1.1
  • 1.5

1 Answer

3 votes
3 votes

Here, 

average(x)=2

average(y)=1.06

$\sum$ (X- average(x))(Y- average(y))=(-1*0.44+0+1*1.64)=1.2

$\sum$ (X- average(x))^2=(1+0+1)=2

m=1.2/2

m= 0.6 should be answer

Source: http://www.varsitytutors.com/hotmath/hotmath_help/topics/line-of-best-fit

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