STANDART SAPMA HESABI
A=25 , C= 0.5 seçilmiştir ;
U=(X-A) / C
U1=( 23.5-25) / 0.5= -3
U2=(24-25) / 0.5= -2
U3=( 24.5-25) / 0.5= -1
U4=( 25-25) / 0.5= 0
U5=( 25.5-25) / 0.5= 1
U6=( 26-25) / 0.5= 2
U7=( 26.5-25) / 0.5= 3
U8=( 27-25) / 0.5= 4
|
X
|
U
|
f
|
f.U
|
(U-Ū)2
|
f.(U-Ū)2
|
|
23.5
|
-3
|
1
|
-3
|
11.864198
|
11.864198
|
|
24
|
-2
|
6
|
-12
|
5.975309
|
35.851854
|
|
24.5
|
-1
|
23
|
-23
|
2.086419
|
47.987637
|
|
25
|
0
|
48
|
0
|
0.197531
|
9.481488
|
|
25.5
|
1
|
39
|
39
|
0.308642
|
12.037038
|
|
26
|
2
|
20
|
40
|
2.419753
|
48.39506
|
|
26.5
|
3
|
5
|
15
|
6.530864
|
32.65432
|
|
27
|
4
|
2
|
8
|
12.641975
|
25.28395
|
|
|
|
∑f=144
|
∑ f.U=64
|
|
∑ f.(U-Ū)2=223.555545
|
Ū=∑ f.U / ∑f = 64 / 144= 0.4444444
σ U=(∑ f.(U-Ū)2 / ∑f)1/2 = ( 223.555545/144)1/2= 1.245981
σ x=C. σ U= (0.5).(1.245981) = 0.6229905
