Calculating the Average
mean = sum of trials / number of trials
= (4.10m + 4.30m + 4.30m) / 3
= 4.23 m
Error Calculation
The difference in the theoretical distance and actual distance traveled by the projectile can be calculated in a percentage.
% error = [1.00 - (actual result / theoretical result)] x 100
= [1.00 - (4.23m / 5.31m)] x 100
= (1.00 - 0.80) x 100
= 20%