O’zbekiston respublikasi qishloq va suv xo’jaligi vazirligi samarqand qishloq xo’jalik instituti «Dehqonchilik va meliorasiya asoslari»

I L O V A

1. G’o’za hosildorligi

№	Variantlar	Takrorliklar bo’yicha xosildorlik s/ga				Jami, s V-yig’indisi	O’rtacha s/ga
		1	2	3	4
1	Nazorat	14.1	15.5	16.0	12.9	58.5	14.62
2	30 t/ga go’ng	22.7	22.9	23.4	18.4	87.4	21.85
3	NPK+ 30 t/ga go’ng	42.6	40.1	41.3	39.0	163.0	40.75
4	N250P175K125	33.5	36.3	38.7	36.2	144.7	36.17
R yig’indisi		112.9	114.8	119.4	106.5	Σ=453.6	X=28.35

2. Qayta ishlangan raqamlar jadvali

№	Variantlar	X1=x-28				Jami, s V-yig’indisi
		1	2	3	4
1	Nazorat	-13.9	-12.5	-12	-15.1	-53.5
2	30 t/ga go’ng	-5.3	-5.1	-4.6	-9.6	-24.6
3	NPK+ 30 t/ga go’ng	14.6	12.1	13.3	11.0	51
4	N250P175K125	5.5	8.3	10.7	8.2	32.7
R yig’indisi		0.9	2.8	7.4	-5.5	Σx1=5.6

Kuzatishlarning umumiy soni

N= l•n =4•4=16

Korrektorlovchi omil

C= (Σx₁)² ׃ N=5,6² ׃ 16=1,96

Og’shlar kvadratining yig’indisi

C_y=(Σx₁)² - S= (13.9²+12,5²+12²+15,1²+5,3²+5,1²+4,6²+9,6²+14,6²+12.1²+13.3²+11.0²+5,5²+8.3²+10.7²+8.2²)-1.96= =(193.21+156.25+144+228.01+28.09+26.01+21.16+92.16+213.16+146.41+176.89+121.0+30.25+68.89+114.49+67.24)-1.96=1827.22-1.96=1825.26

C_p=Σp² ׃ l-C=(0.9²+2.8²+7.4²+5.5²)׃ 4-1.96= (0.81+7.84+54.76+30.25)׃ 4-1.96= 93.66׃ 4-1.96= 21.455
C_v=ΣV²׃ n-C= (53.5²+24.6²+51²+32.7²)׃ 4-1.96= (2862.25+605.16+2601+1069.29)׃ 4-1.96= 7137.7׃ 4-1.96= 1782.465
C_z=C_y-C_n-C_v=1825.26-21.455-1782.465=21.34
3. Dispersion analiz natijalari

Dispersiya	Kvadratlar yig’indisi	Yerkinlik darajasi	O’rtacha kvadrat	G’f	G’05
Umumiy	1825.26	15			
Qaytariqlar	21.455	3			
Variantlar	178.465	3	594.155	250.59	
Qoldiq (xatolik)	21.34	9	2.371		

Sx===0.76990.77

Sd===1.09s/ga
EKIF₀₅=S_d∙t₀₅=1.09∙2,26=2,46s/ga

S_x%===2,72%