75 1 75 5625 830,5924
78 1 78 6084 1012,5124
84 1 84 7056 1430,3524
86 1 86 7396 1585,6324
88 1 88 7744 1748,9124
95 1 95 9025 2383,3924
97 1 97 9409 2582,6724
98 1 98 9604 2685,3124
99 1 99 9801 2789,9524
∑ 50 2309 152315 45685,38
1
1. X=(∑nixi)/n= 46,18
Dx=(∑ni(xi-X)2)/n= 913,71
S=σ=√Dx= 30,23
Scor=√(n/(n-1))*S= 30,54
Me= 45; 49
Mo= 13; 66; 73
R=xmax-xmin= 99
2. Tõene keskväärtus on μ=0,05, P=95% korral t=1,96 ,seega:
X-t(σ/√n)<μ
66 86 1 86 7396 1585,63
68 88 1 88 7744 1748,91
68 95 1 95 9025 2383,39
70 97 1 97 9409 2582,67
71 98 1 98 9604 2685,31
73 99 1 99 9801 2789,95
73 Summa 50 2309 152315 45685,38
73
75 xk 46,18 Keskväärtuse usaldusvahemik: 37,80
66 86 1 86 7396 1585,63
68 88 1 88 7744 1748,91
68 95 1 95 9025 2383,39
70 97 1 97 9409 2582,67
71 98 1 98 9604 2685,31
73 99 1 99 9801 2789,95
73 Summa 50 2309 152315 45685,38
73
75 xk 46,18 Keskväärtuse usaldusvahemik: 37,80
86 1 86 7396 1585,63 88 1 88 7744 1748,91 95 1 95 9025 2383,39 97 1 97 9409 2582,67 98 1 98 9604 2685,31 99 1 99 9801 2789,95 50 2309 152315 45685,38 1 1. x= n x i i Dx=913,71 n kontroll= 913,71 DX = ni ( xi - x) S=30,23 n S = = D Scor=30,53 n Me= 49 S cor = D
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