Projek Uas Manufaktur penganngaran bahan baku
Projek UAS
Nama Usaha : Doff "Skate shop"
Bidang :Olahraga
Data Penjualan :
Bulan
|
y
|
x
|
xy
|
x2
|
x2y
|
x4
|
Januari
|
200
|
-9
|
-1800
|
81
|
16200
|
6561
|
Februari
|
240
|
-7
|
-1680
|
49
|
11760
|
2401
|
Maret
|
260
|
-5
|
-1300
|
25
|
6500
|
625
|
April
|
300
|
-3
|
-900
|
9
|
2700
|
81
|
Mei
|
360
|
-1
|
-360
|
1
|
360
|
1
|
Juni
|
400
|
1
|
400
|
1
|
400
|
1
|
Juli
|
380
|
3
|
1140
|
9
|
3420
|
81
|
Agustus
|
410
|
5
|
2050
|
25
|
10250
|
625
|
September
|
350
|
7
|
2450
|
49
|
17150
|
2401
|
Oktober
|
420
|
9
|
3780
|
81
|
34020
|
6561
|
∑
|
3320
|
0
|
3780
|
330
|
102760
|
19338
|
Pembeda Produk : Papan Skate ukuran 8,0
Papan Skate ukuran 7,5
Nilai a
Y= n.a+c. ∑x2
∑x2.y= ∑x2.a+c. ∑x4
3320 = 10a+c.330 …………………………………….(58,6)
102.760 = 330a+c.19338
194.552 = 586a+c.19338
102.760 = 330a+c.19338
102.760 = 330a+c.19338
91.794 = 256a
a = 91.794 : 256
a =358,5625
a = 91.794 : 256
a =358,5625
nilai b
b =
∑xy : ∑x2
b = 3780 : 330
b = 11,454
b = 3780 : 330
b = 11,454
nilai c
102.760 =
330a+c.19338
102.760 = 330.358,5625+c.19338
102.760 = 118325,625+c.19338
-15565,625 = c.19338
c = -15565,625 : 19338c = -0,8045
102.760 = 330.358,5625+c.19338
102.760 = 118325,625+c.19338
-15565,625 = c.19338
c = -15565,625 : 19338c = -0,8045
Ramalan Penjualan Bulan November
2016-April 2017
November 2016 : Y = a+bx+c (x)2
= 358,5625+(11,454 .11)+(-0,8045.(11)2)
= 387 papan
= 358,5625+(11,454 .11)+(-0,8045.(11)2)
= 387 papan
Desember 2016 : Y = a+bx+c (x)2
= 358,5625+(11,454 .13)+(-0,8045.(13)2)
= 372 papan
= 358,5625+(11,454 .13)+(-0,8045.(13)2)
= 372 papan
Januari 2017 : Y = a+bx+c (x)2
= 358,5625+(11,454 . -9)+(-0,8045.(-9)2)
= 358,5625+(11,454 . -9)+(-0,8045.(-9)2)
= 189 papan
Februari 2017 : Y = a+bx+c (x)2
= 358,5625+(11,454 .-7)+(-0,8045.(-7)2)
= 358,5625+(11,454 .-7)+(-0,8045.(-7)2)
= 239 papan
Maret 2017 : Y = a+bx+c (x)2
= 358,5625+(11,454 .-5)+(-0,8045.(-5)2)
= 358,5625+(11,454 .-5)+(-0,8045.(-5)2)
= 281 papan
April 2017 : Y = a+bx+c (x)2
= 358,5625+(11,454 .11)+(-0,8045.(11)2)
= 358,5625+(11,454 .11)+(-0,8045.(11)2)
= 317papan
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