Time serial number

Actual value/(10⁻²・mm)

Forecasting value/(10⁻²・mm)

Absolute error (%)

Relative error (%)

1

56.25

56.84

0.59

1.05

2

56.55

56.54

0.01

0.02

3

58.29

56.72

1.57

2.69

4

57.13

58.58

1.45

2.54

5

57.82

57.31

0.51

0.89

6

58.23

57.96

0.27

0.47

7

58.27

58.36

0.09

0.15

8

59.42

58.37

1.05

1.77

9

58.96

59.50

0.54

0.92

10

57.48

59.02

1.55

2.69

11

57.48

57.53

0.06

0.10

12

55.94

57.52

1.59

2.84

13

55.79

55.98

0.19

0.33

14

57.52

55.83

1.69

2.94

15

57.71

57.55

0.16

0.28

16

56.40

57.74

1.35

2.39

17

58.62

56.42

2.19

3.74

18

57.71

58.64

0.93

1.60

19

59.27

57.74

1.53

2.58

20

56.63

59.29

2.66

4.69

21

57.98

56.65

1.32

2.29

22

56.72

58.00

1.28

2.26

23

56.88

56.74

0.14

0.25

24

55.69

56.90

1.21

2.17

Mean relative error

1.73