111
n
PE3
=
7,85
;
PE3
=
7,85
Statistik Ketepatan Peramalan Metode Regresi Linier
Perhitungan :
9
Nilai Tengah Galat Absolut (Mean Absolute Error)
MAE =
1
?
n
et
=
1
×
4777,28 = 140,5083
n
t
=¹
34
9
Nilai Tengah Galat Kuadrat (Mean Squared Error)
MSE =
1
?
n
et
2
=
1
×1044642,64 = 30724,7834
n
t
=¹
34
9
Deviasi Standar Galat (Standard Deviation of Error)
SDE
=
1
n
-
1
?
t
=¹
et
2
=
1
34 -
1
×1044642,64
=
177,9209
9
Nilai
Tengah
Galat
Persentase
Absolut
(Mean
Absolute
Percentage
Error)
MAPE =
1
?
n
PE =
1
×
321,48 = 9,4553
n
t
=¹
t
34
?
Perbandingan Metode Regresi Linier dan Quadratic
Tabel 5.18 Perbandingan Error Regresi Linier dan Quadratic
Regresi Linier
Quadratic
MAE
110,1022
140,5083
MSE
18561,9394
30724,7834
SDE
138,1748
177,9209
MAPE
7,8339
9,4553
 |