Таълим вазирлиги тошкент молия институти “статистика ва эконометрика” кафедраси

Yillar	2007	2008	2009	2010	2011	2012	2013	2014	2015
2016
Davlat byudjeti daromadlari tr-ln.so’m	4.0	6.1	8.8	10.8	13.6	17.1	21.3	26.2	31.7	36.5

Berilgan ma’lumotlar asosida:

1. 
   To‘rt yillik sirg‘anchiq o‘rtachalarni aniqlang;
   

1. 
   4 yillikni qushamiz
   

4.0+6.1+8.8+10.8=29.7
6.1+8.8+10.8+13.6=39.5
8.8+10.8+13.6+17.1=50.3
10.8+13.6+17.1+21.3=52.8
13.6+17.1+21.3+26.2=78.2
17.1+21.3+26.2+31.7=96.3
21.3+26.2+31.7+36.5=115.7

2. 
   yig’indini 4 ga bo’lib sirg’anchiq o’rtachani topamiz
   

29,7:4=7,425 39,5:4=9,875 50,3:4=12,575 52,8:4=13,2
78,2:4=19,55 96,3:4=24,075 115,7:4=28,925

2. 
   Analitik tekislash orqali modelni tuzing;
   

Yillar	Davlat byudjeti daromadlari tr-ln.so’m Уt	4 yillik bo’yicha jami	4 yillik o’rtacha sirg’anchiq	Markazlashtirilgan Sirg’anchiq o’rtacha
2007	4,0	-	-
2008	6,1	-	-
2009	8,8	-	-
2010	10,8	29,7	7.425	-
2011	13,6	39.5	9.875	8.65
2012	17,1	50.3	12.575	11.225
2013	21,3	52.8	13.2	12.8875
2014	26,2	78.2	19.55	16.375
2015	31,7	96.3	24.075	21.8125
2016	36,5	115.7	28.925	26.5
Жами	176.1	462	115.625	97.45
Ўртача қиймат	17.61	66	16.52	16.24

Y  T  S  E .

berilgan qatorni sirg’anchiq o’rtacha usul bilan tekslash

3. 
   Approksimatsiya o‘rtacha xatosini aniqlang;
   

Ā = 1/7*0.343*100%=4.9%