Breve resumo da aula da semana passada "Desvio medio"

 

Peso	F	"x"	F"x"	d="x"-~x	D2	F.d2
5--10	10	7.5	75	-13.2	174.24	1742.4
10--15	8	12.5	100	-8.2	67.24	537.92
15--20	12	17.5	210	-3.2	10.24	122.88
20--25	16	22.5	360	-1.8	3.2	51.84
25--30	11	27.5	302.5	-6.8	46.24	508.64
30--35	10	32.5	325	11.8	139.24	1392.24
35--40	1	37.5	37.5	16.8	282.24	282.24
E	68		1410			4638.16

O~= V--E Fd2/N
S= V--E Fd2/n-1




O~=V--4638.16/68
= 8.25
σ= sigma = O~
Dm=E(d)/n


Desvio padrão
o~= V----Ed2/N
o~=desvio padrao populacional


S = amostral troca o N por n-1

Num	D (x-~x)	D2
6	1	1
4	-1	1
3	-2	4
2	-3	9
8	3	9
7	2	4
4	-1	1
6	1	1
1	-4	16
9	4	16
8	3	9
2	-3	9
60/2=5		75

Q~=V-----75/12
= 6.25
= 2.5