Question

Teachers at price middle school are planning a birthday party for the principal planners estimated that 42 slices of cake would be needed. In fact only 30 slices of cake were eating what was the error in estimate of how mucj cake was eaten ?

Answer 1

error=estimate-actual
error=42-30=12
if want percent error

percent error=error/original times 100=12/30 times 100=40% error


the error is 12

Answer 2

E = 12

RE = 0.4

Explanation:

The estimation error (E) is defined as the absolute value of the difference between the actual value (RV) and the estimated value (EV). With RV = 30 and EV = 42.

E = | EV - RV | = | 42 - 32 | = | 12 | = 12

A complementary concept could be the relative error (RE), which is defined as the ratio between the absolute error and the actual value.

RE = E / RV = 12/30 = 2/5 = 0.4