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Вступ до теорії ймовірностей та соціальна статистика [00598]

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Центральним статистичним моментом s-го порядку називаютьвеличину

середнє арифметичне величин (хів)s

 

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Якщо вибірку розташуватив порядку зростання, то отримаємо варіаційний (варіантний) ряд.

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Початковим статистичним моментом вибірки s- г о порядку називають величину

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Виправленою статистичною дисперсією називають величину S2= n/(n-1) DX

 

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Асиметрією вибірки називаютьвеличину .

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За вибіркою обчислити коефіцієнти парних кореляцій: (Y) від (Х1)

Y

X1

75,59

20,36

60,31

12,07

65,61

10,98

81,02

17,04

70,61

12,42

75,69

11,98

82,62

12,15

103,66

15,75

96,68

12,3

102,68

10,5

110,36

10,51

99,34

8,42

116,38

10,54

130,42

16,37

145,59

12,97

135,55

12,78

152,71

15,6

165,02

11,72

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Одне із завдань регресійного аналізу - визначення функції регресії

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Одне із завдань регресійного аналізу - побудова точкових та інтервальних оцінок параметрів функції регресії

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За вибіркою побудувати рівняння парних регресійних моделей залежності: (Y) від (Х3)

 

Y

X3

75,59

13,5

60,31

13,8

65,61

12,6

81,02

13,9

70,61

12,1

75,69

18,2

82,62

14,7

103,66

14,2

96,68

13,9

102,68

12,6

110,36

11,9

99,34

10,6

116,38

13,3

130,42

14,4

145,59

12,7

135,55

14,8

152,71

15,4

165,02

23,9

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Одне із завдань кореляційного аналізу - відбір факторів, вплив яких на результативну ознаку  є найсуттєвіший, за виміром ступеня зв’язаності між явищами

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