Sample serial number

Cu

Zn

Theoretical value (%)

Fitted value (%)

Absolute error (%)

Relative error (%)

Theoretical value (%)

Fitted value (%)

Absolute error (%)

Relative error (%)

1

4.371

4.3672

−0.0038

−0.09

0.039

0.0391

0.0001

0.26

2

0.081

0.0812

0.0002

0.26

0.005

0.0059

0.0009

18.38

3

0.081

0.0804

−0.0006

−0.75

0.004

0.0050

0.0010

25.05

4

0.035

0.0471

0.0121

34.56

0.021

0.0236

0.0026

12.45

5

0.26

0.2492

−0.0108

−4.15

0.1

0.0969

−0.0031

−3.08

6

1.777

1.7755

−0.0015

−0.09

5.792

5.7926

0.0006

0.01

average

1.101

1.1001

0.0048

0.44

0.994

0.9939

0.0014

0.14