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1503-Текст статьи-4092-1-10-20200627
- Bu sahifa navigatsiya:
- 19,77 3. 46,0 25,0 2116,0 1150,0 23,11 4. 54,0 26,3 2916,0 1420,2 26,44
- 36,87 8. 97,0 42,0 9467,29 4086,6 44,50 ∑ 475,3 229,6 31769,29
305 14.8-jadval Normal chiziqli tenglamalar tizimining koeffitsiyentlarini hisoblash T/r Oila a’zolarining o‘rtacha bir oylik daromad, ming so‘m (X) Bir sutkada har bir oila a’zosi tomonidan iste’mol qiladigan yog‘, gr (U) X 2 XU Ux=22,55+ 0,017x (gr) 1. 29,0 15,2 841,0 440,8 16,02 2. 38,0 17,0 1444,0 646,0 19,77 3. 46,0 25,0 2116,0 1150,0 23,11 4. 54,0 26,3 2916,0 1420,2 26,44 5. 62,0 32,0 3844,0 1984,0 29,78 6. 70,0 34,1 4900,0 2387,0 33,11 7. 79,0 38,0 6241,0 3002,0 36,87 8. 97,0 42,0 9467,29 4086,6 44,50 ∑ 475,3 229,6 31769,29 15116,5 229,6 Normal tenglamalar tizimiga jadvaldagi ma’lumotlarni qo‘yib chiqamiz: 8a 0 + 475,3a 1 = 229,6; 475,3a 0 +31769,29 a 1 = 15116,6. Har bir tenglamaning hadlarini a 0 koeffitsiyentining oldidagi 8 soniga bo‘lib chiqamiz: a 0 + 59,412a 1 = 28,7; a 0 +66,84a 1 = 31,8. Ikkinchi tenglamadan birinchisini ayirib chiqsak, u holda: 2,428€ 1 = 3,1. Bu yerda € 1 = 3,1 7,428 = 0,417 a 1 qiymatini birinchi tenglamaga qo‘yib, a 0 ning qiymatini aniqlaymiz: a 0 + 59,412x 0 417 = 28,7; bu yerda a 0 =28,7 – 24,755=3,925. Tenglamadagi a 0 va a 1 parametrlarni quyidagicha ham hisoblash mumkin: a 0 = 229,6 + 31769,29 − 15116,6 ∗ 475,3 8 ∗ 31769,29 − 475,3 ∗ 475,3 = 3,925; a 0 = 8 ∗ 15116,6 − 229,6 ∗ 475,3 8 ∗ 31769,29 − 475,3 ∗ 475,3 = 0,417. Shunday qilib, korrelyatsion bog‘lanish regressiyasining to‘g‘ri chiziqli tenglamasi quyidagi ko‘rinishni oladi: 306 U x = 3,925 + 0,417 X Ushbu tenglama yordamida U ning qatordagi istalgan qiymatini aniqlash mumkin. Masalan, U x = 3,925 + 0,41729,0 =16,02 U x = 3,925 + 0,417 38,0 =19,77 U x = 3,925 + 0,417 46,0 =23,11 U x = 3,925 + 0,417 54,0 =26,44 U x = 3,925 + 0,417 62,0 =29,78 U x = 3,925 + 0,417 70,0 =33,11 U x = 3,925 + 0,41779,0 =36,87 U x = 3,925 + 0,417 97,3 =44,50 Bu yerda a 1 regressiya koeffitsiyenti natijaviy belgi (U) bilan omil belgi (x) o‘rtasidagi bog‘lanishni belgilab beradi. Bu esa omil belgi bir birlikka ortganda natijaviy belgi necha birlikka oshadi, degan savolga javob beradi. Bizning misolimizda a 1 ≈ 0,42 ga teng. Demak daromadning bir songa oshishi har bir oila a’zosi tomonida iste’mol qilinadigan yog‘ning bir sutkada 0,42 grammga oshishiga olib keladi. Boshlangich ma’lumotlar (X i , U i ) dekart kordinata tizimiga qo‘yib chiqilsa, korrelyatsiya maydoni hosil bo‘ladi. Bu quyidagi chizmada aks ettirilgan (14.1-rasm). Download 6.42 Mb. Do'stlaringiz bilan baham: |
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