Question

Q.(+35)

Berdasarkan data tersebut hitunglah :
• Mean
• Median
• Modusnya ​

Answer 1

Jawaban:

Tabel lengkap terlampir

Penjelasan dengan langkah-langkah:

DATA BERKELOMPOK

J = F × x = 1.020

F = 30

Tb = 31–0,5 = 30,5

n = 30 → ½n = 15

p = 25 – 21 + 1 = 5

fk = 2 + 8 = 10

f1 = 9

d1 = 9 – 8 = 1

d2 = 9 – 6 = 3

a) Mean = J

F

Mean = 1.020

30

Mean = 34 ✔

b) Median = Tb + (½n – fk) × p

f1

Median = 30,5 + (15 – 10) × 5

9

Median = 30,5 + 5 × 5

9

Median = 30,5 + 25

9

Median = 30,5 + 2,78

Median = 33,28 ✔

c) Modus = Tb + d1 × p

d1 + d2

Modus = 30,5 + 1 × 5

1 + 3

Modus = 30,5 + 5/4

Modus = 30,5 + 1,25

Modus = 31,75 ✔