# Error calculation

Doctor Luz
Suppose I have some measures of certain physical magnitude "I" between the range x=x1 and x=x2.

I have for each x in this range a value y of I, then y=I(x)

I have a continuous level of noise y=y1.

I have I(x3)=y3 with x1<=x3<=x2.

how can I compute the error measuring y3?

Thank you