The given data is
Actual = 7
scale1 = 7.033
scale2 = 6.91
scale3 = 7.1
Define
absolute difference = |Actual - Measured|
%error = 100 * [(absolute difference)/Actual]
Note:
The scale with the lowest absolute difference is the most precise.
The scale with the lowest %error is most accurate.
Calculate absolute differences.
Scale1: |7 - 7.033| = 0.033
Scale2: |7 - 6.91| = 0.090
Scale3: |7 - 7.1} = 0.100
The most precise is Scale1
Calculate %error.
Scale1: 100*(0.033/7) = 0.47%
Scale2: 100*(0.090/7) = 1.29%
Scale3: 100*(0.100/7) = 1.43%
The most accurate is Scale1
Answer:
Scale1 is most accurate.
Scale1 is most precise.