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121
M
=
?
Perhitungan :
M
=
X
+
X
t
-¹
+
X
t
-²
k
+
.... + X
t
-k +¹
?
moving
average
yang pertama
'
M
t
t
+
M
t
-¹
+
M
t
-²
k
+
.... + M
t
-k +¹
?
moving
average
yang kedua
a
=
M
+
(M
-
M
'
t
)
=
2M
-
M
'
t
b
=
2
(M
k
-
1
t
-
M
'
)
F
(t +m
=
a
+
b
t
.m
?
Contoh Perhitungan :
Dust Collector 10m³ :
-
Peramalan
periode ke-6
M
=
M
=
X
+
X
t
-¹
+
X
t
-²
+
.... +
X
t
-k +¹
k
X
+
X
+
X
6
3
?
moving
average
yang pertama
=
27 + 29 + 30
=
28.67
3
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