A linear regression equation models the relationship between two variables in the form y = bx + c, using technology such as excel or a linear regression calculator, the following models of the data we obtained.
1.)
y = -1.5x + 19.8
Predicted number in 2011:
x = 2011 - 2003 = 8
y = - 1.5(8) + 19.8 = 7.8
Hence, the predicted number in 2011 would be 8
2.)
y = -0.0192x + 1.656
Predicted population in 2012 :
x = 2012 - 1960 = 52
y = - 0.0192(52) + 1.656 = 657,600
Hence, predicted population in 2012 would be 657,600
3.)
y = 1.31x + 44.38
Predicted number of goals in 2009 :
x = 2009 - 2002 = 7
y = 1.31(7) + 44.38 = 53.55 = 54
The predicted number of goals in 2009 is 54
4.)
y = 0.32x + 1.50
The predicted price in 2015 :
x = 2015 - 2002 = 13
y = 0.32(13) + 1.50 = 5.66
The predicted price in 2015 would be $5.66
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