Menghitung Modus, Rata-rata, dan Median (Hal. 22)

Soal
 
Urutkan data-data berikut, lalu tentukan modus, rata-rata, dan mediannya.

• 12,  14, 18, 12, 16, 15, 20, 14, 17, 14, 11
• 24, 22, 26, 23, 22, 20
• 6, 8, 4, 5, 6, 8, 7, 6, 9, 8, 12
• 300, 200, 240, 220, 230, 200, 280, 220, 260, 220
• 128, 126, 130, 132, 126, 190, 180, 160, 124, 126 

Jawab: 

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12,  14, 18, 12, 16, 15, 20, 14, 17, 14, 11
 
 Urutan data = 11, 12, 12, 14, 14, 14, 15, 16, 17, 18, 20
Modus = 14 (muncul 3 kali

Rata-rata =	(12+14+18+12+16+15+20+14+17+14+11)
	11

Rata-rata =	163	= 14,82
	11

Median = data ke 6 = 14

------- 24, 22, 26, 23, 22, 20
 
Urutan data = 20, 22, 22, 23, 24, 26
Modus = 22 (muncul 2 kali)

Rata-rata =	(24+22+26+23+22++20)
	6

Rata-rata =	137	= 22,83
	6

Ada 6 data. Data ke-3 adalah 22 dan data ke-4 adalah 23

Median =	22 + 23	=	45	= 22,5
	2		2

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6, 8, 4, 5, 6, 8, 7, 6, 9, 8, 12
 
 Urutan data = 4, 5, 6, 6, 6, 7, 8, 8, 8, 9, 12
Modus = 8 (muncul 3 kali)

Rata-rata =	(6+8+4+5+6+8+7+6+9+8+12)
	11

Rata-rata =	79	= 7,18
	11

Median = data ke 6 = 7

-------
300, 200, 240, 220, 230, 200, 280, 220, 260, 220
 
Urutan data = 200, 200, 220, 220, 220, 230, 240, 260, 280, 300
Modus = 220 (muncul 3 kali)

Rata-rata =	(300+200+240+220+230+200+280+220+260+220)
	10

Rata-rata =	2.370	= 237
	10

Ada 10 data. Data ke-5 adalah 220 dan data ke-6 adalah 230

Median =	220 + 230	=	450	= 225
	2		2

-------
128, 126, 130, 132, 126, 190, 180, 160, 124, 126 
Urutan data = 124, 126, 126, 126, 128, 130, 132, 160, 180, 190
Modus = 126 (muncul 3 kali)

Rata-rata =	(128+126+130+132+126+190+180+160+124+126)
	10

Rata-rata =	1.422	= 142,2
	10

Ada 10 data. Data ke-5 adalah 128 dan data ke-6 adalah 130

Median =	128 + 130	=	258	= 129
	2		2