Question

Nilai Siswa
30 63 58 63 70 80 65 28 48 80 93 33 78 60 55 55 40 35
60 25 80 15 50 38 68 90 73 83 85....ada 29 data.

1.Mean :
2.Median:
3.Modus:
4.Jangkauan:
5 Kuartil 1/Q1=
6.Kuartil 2/ Median=
7.Kuartil 3/Q3=
8.Jangkauan Interkuartil= Q3-Q1.
9. urutan Data​

Answer 1

Terlebih dahulu urutkan data dari yang terkecil:

Hitunglah, rumus/cara:

1. Mean(Rata-rata) = Jumlah data/banyaknya data

= 15 +25 + 28 + 30 + 33 + 35 + 35 + 38 + 40 + 48 + 50 + 55 + 55 + 58 + 60 + 60 + 63 + 63 + 65 + 68 + 70 + 73 + 78 + 80 + 80 + 80 + 83 + 85 + 90/29

= 1.643/29

= 56,65

2.) Median:

15, 25, 28, 30, 33, 35, 35, 38, 40, 48, 50, 55, 55, 58, | 60, | 60, 63, 63, 65, 68, 70, 73, 78, 80, 80, 80, 83, 85, 90,

Q3(median/nilai tengah) = 60

3. Modus:

15 = 1

25 = 1

28 = 1

30 = 1

33 = 1

35 = 2

38 = 1

40 = 1

48 = 1

50 = 1

55 = 2

58 = 1

60 = 2

63 = 2

65 = 1

68 = 1

70 = 1

73 = 1

78 = 1

80 = 3

83 = 1

85 = 1

90 = 1

Jadi, modus yang paling sering muncul adalah 80 sebanyak 3 kali

4. jangkauan:

Xmaks - Xmin

Xmaks - Xmin

= 90 - 15

= 75

5. Kuartil Q1:

15, 25, 28, 30, 33, 35, 35, 38, 40, 48, 50, 55, 55, 58, | 60, | 60, 63, 63, 65, 68, 70, 73, 78, 80, 80, 80, 83, 85, 90,

5. Q1:

Q1(kuartil atas) = 35 + 38/2

= 73/2

= 36,5

6. Kuartil Q2:

Q2(median/nilai tengah) = 60

7. Kuartil Q3

Q3(kuartil atas) = 73 + 78/2

= 151/2

= 75,5

8. Jangkauan interkuartil:

(Hl = Q3 - Q1

(H) = Q3 - Q1

(H) = 75, 5 - 36,5

(H) = 39

9. Data diurutkan dari yang terkecil:

15, 25, 28, 30, 33, 35, 35, 38, 40, 48, 50, 55, 55, 58, | 60, | 60, 63, 63, 65, 68, 70, 73, 78, 80, 80, 80, 83, 85, 90,