LYRIC FLASHLIGHT - JESSIE J

Flashlight

When tomorrow comes
I'll be on my own
Feeling frightened of
The things that I don't know
When tomorrow comes
Tomorrow comes
Tomorrow comes

And though the road is long
I look up to the sky
And in the dark I found, lost hope that I won't fly
And I sing along, I sing along, and I sing along

I got all I need when I got you and I
I look around me, and see a sweet life
I'm stuck in the dark but you're my flashlight
You're getting me, getting me, through the night
Kick start my heart when you shine it in my eyes
Can't lie, it's a sweet life
Stuck in the dark but you're my flashlight
You're getting me, getting me, through the night
'Cause you're my flashlight (flashlight)
You're my flashlight (flashlight), you're my flashlight

Ooh

I see the shadows long beneath the mountain top
I'm not afraid when the rain won't stop
'Cause you light the way
You light the way,
You light the way

I got all I need when I got you and I
I look around me, and see a sweet life
I'm stuck in the dark but you're my flashlight
You're getting me, getting me, through the night
Kick start my heart when you shine it in my eyes
Can't lie, it's a sweet life
Stuck in the dark but you're my flashlight
You're getting me, getting me, through the night
(Light, light, light, you're my flashlight)
Light, light, you're my flashlight
Light, light, light, light, light, oh
(Light light light you're my flashlight)
You're my flash, oh

I got all I need when I got you and I
I look around me, and see a sweet life
I'm stuck in the dark but you're my flashlight
You're getting me, getting me, through the night
Kick start my heart when you shine it in my eyes
Can't lie, it's a sweet life
Stuck in the dark but you're my flashlight
(You're my flashlight)
You're getting me, getting me through the night
'Cause you're my flashlight
'Cause you're my flashlight
You're my flashlight

Ooh ooh
Ooh ooh
Ooh ooh ooh ooh ooh
Ooh oh oh

You're my flashlight
Light, light
You're my flashlight
Light light ye-yeah

(Light light light
You're my flashlight
Light light)

You're my flashlight

Flashlight - Jessie J

PENGUKURAN NILAI SENTRAL

BAB III

PENGUKURAN NILAI SENTRAL

Nilai sentral adalah nilai yang dapat mewakili sekelompok data.

Data dalam pengukuran nilai sentral terdiri dari :

a. Data tidak dikelompokkan yaitu data yang dapat dihitung secara individu tanpa harus membuat tabel distribusi frekuensi.

b. Data dikelompokkan yaitu data yang nilainya dihitung secara berkelompok sehingga memerlukan penyusuna tabel distribusi frekuensi.

 Pengukuran nilai sentral :

1. Mean

2. Median

3. Modus

4. Rata – Rata Kuadrat

5. Rata – Rata Harmoni

6. Rata – Rata Ukur

1.      MEAN

a.       Data yang tidak dikelompokkan

 

Contoh :

Bulan	Januari	Februari	Maret	April	Mei	Juni
Penjualan	40	37	39	44	35	30

Tentukan rata-rata penjualan selama 6 bulan !

Penyelesaian :

 

b.      Data yang dikelompokkan

=

 =

            Ket :    Fi = Frekuensi Kelas Pertama

                        Mi = Titik Tengah Kelas Pertama

Contoh 1 :

Selama tahun 2000 total  premi per nasabah yang dibayarkan oleh 60 nasabah sebagai berikut :

Total Premi ( X Rp 1.000 )			Nasabah (F)
Rp   10.000	─	Rp  19.999	6
Rp   20.000	─	Rp  29.999	9
Rp   30.000	─	Rp  39.999	10
Rp   40.000	─	Rp  49.999	20
Rp   50.000	─	Rp  59.999	10
Rp   60.000	─	Rp  69.999	5

Tentukan rata-rata premi per nasabah yang dibayarkan tersebut !

Total Premi ( X Rp 1.000 )			Nasabah (F)	Titik Tengah (M)	FiMi
Rp   10.000	─	Rp  19.999	6	14.999,50	89.997,00
Rp   20.000	─	Rp  29.999	9	24.999,50	224.995,50
Rp   30.000	─	Rp  39.999	10	34.999,50	349.995,00
Rp   40.000	─	Rp  49.999	20	44.999,50	899.990,00
Rp   50.000	─	Rp  59.999	10	54.999,50	549.995,00
Rp   60.000	─	Rp  69.999	5	64.999,50	324.997,50
			60		Rp 2.439.970,00

Penyelesaian :

          

        

Cara Kedua :

 =

Ket :    Mo       = Titik Tengah Pada Interval Kelas Dengan  Kode Nol

            U         = Kelas Tertentu Pada Interval Kelas (Letak Bebas)

                     = Panjang Kelas

Total Premi ( X Rp 1.000 )			Nasabah (F)	U	UiFi
Rp   10.000	─	Rp  19.999	6	-3	-18
Rp   20.000	─	Rp  29.999	9	-2	-18
Rp   30.000	─	Rp  39.999	10	-1	-10
Rp   40.000	─	Rp  49.999	20	0	0
Rp   50.000	─	Rp  59.999	10	1	10
Rp   60.000	─	Rp  69.999	5	2	0
			60		-26

Penyelesaian :

         =

         =

         =

=