Question

the line of best fir for a set of data is y=13x-4.7 a point in the set of data is when x is 4 and y is 53 what is the residual for this point when x is 4

Answer 1

4.7

Explanation:

Best fit line :

y = 13x - 4.7

At x = 4 ; actual value of y = 53

Predicted value of y at x = 4 ;

y = 13(4) - 4.7

y = 52 - 4.7

y = 47.3

Ypredicted = 47.3

Residual value :

Yactual - Ypredicted

52 - 47.3

= 4.7