124
Dust Collector 20m³ :
-
Peramalan
periode ke-6
M
t
=
M
6
=
X
t
+
X
t
-¹
+
X
t
-²
+
.... +
X
t
-k +¹
k
X
4
+
X
5
+
X
6
3
?
moving
average
yang pertama
=
46 + 34 + 39
= 39.67
3
M
'
=
M
t
+ M
t
-¹
+
M
t
-²
+
.... + M
t
-k +¹
?
moving
average
yang kedua
t
M
'
6
k
=
M
4
+ M
5
+ M
6
3
=
39.67 + 38.33 + 39.67
=
39.22
3
a
t
=
M
t
+
(M
t
-
M
'
t
)
=
2M
t
-
M
'
t
a
6
=
2M
6
–
M
‘
6
=
2
*
39.67 – 39.22 = 40.11
b
t
=
2
(M
k
-
1
t
-
M
'
t
)
b
6
=
2
(M
k
-
1
6
-
M
'
6
)
=
2
3
-
1
(39.67 - 39.22) = 0.44
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