O‘rta qiymat. Moda. Mediana — 8-sinf Algebra test savollari

1.Xo‘jalik 100 ga yerdan gektariga 33 s, 50 ga yerdan gektariga 30 s hosil oldi. 1 gektardan o‘rtacha qancha hosil olingan (vaznli o‘rta qiymat)?

• A)32 s
• B)31,5 s
• C)33 s
• D)30 s

2.12, 15, 15, 18, 20, 15, 22 sonlaridan iborat tanlanmaning modasini va o‘rta qiymatini toping.

• A)moda = 15, o‘rta qiymat ≈ 16,7
• B)moda = 15, o‘rta qiymat = 15
• C)moda = 22, o‘rta qiymat ≈ 16,7
• D)moda = 18, o‘rta qiymat = 17

3.3, 5, 7, 9, 11, 13 variatsion qatorning medianasini toping (hadlar soni juft).

• A)8
• B)9
• C)7
• D)10

4.8, 12, 15, 20, 25 variatsion qatorning medianasini toping (hadlar soni toq).

• A)15
• B)12
• C)20
• D)16

5.7, 9, 12, 15, 18, 23 tanlanmaning kengligini (r) toping.

• A)16
• B)23
• C)7
• D)9

6.4, 7, 9, 10, 15 sonlarining o‘rta qiymatini toping.

• A)9
• B)10
• C)7
• D)45

7.Variatsion qatorning eng katta va eng kichik hadlari orasidagi ayirma qanday nomlanadi?

• A)kenglik
• B)mediana
• C)moda
• D)o‘rta qiymat

8.Tanlanmada bironta variantaning eng ko‘p takrorlangan qiymati qanday nomlanadi?

• A)moda
• B)mediana
• C)kenglik
• D)o‘rta qiymat

9.Variatsion qatorning o‘rtasida joylashgan had (hadlar soni toq bo‘lganda) qanday nomlanadi?

• A)mediana
• B)moda
• C)kenglik
• D)chastota

10.Vaznli o‘rta qiymat formulasida nᵢ nimani bildiradi?

• A)xᵢ variantaning chastotasini
• B)xᵢ variantaning o‘zini
• C)tanlanma hajmini
• D)variantalar sonini