Jawaban:

1. a) mean = \frac{6+5+7+8+10+5+9+5}{8} = \frac{55}{8} =6,875

8

6+5+7+8+10+5+9+5

=

8

55

=6,875

5,5,5,6,7,8,9,10

median = \frac{6+7}{2} = \frac{13}{2} =6,5

2

6+7

=

2

13

=6,5

modus = 5

b) mean = \frac{3+7+5+4+6+7+5+8}{8} = \frac{45}{8} =5,625

8

3+7+5+4+6+7+5+8

=

8

45

=5,625

3,4,5,5,6,7,7,8

median = \frac{5+6}{2} =5,5

2

5+6

=5,5

modus = 5 , 6, dan 7

2. 3 × 2 = 6

4 × 3 = 12

5 × 6 = 30

6 × 9 = 54

7 × 8 = 56

8 × 4 = 32 +

= 190

jumlah frekuensi = 2+3+6+9+8+4 = 32

mean = \frac{190}{32} =5,93

32

190

=5,93

median ⇒ 32/2 + 1 = urutan ke-17

frekuensi ke-17 ⇒ (2+3+6+9) ≥ 17

median = 6

modus = 6