RADWAG WPY series User Manual page 78

The results are calculated according the tables below:
For an ABBA series
No
1
2
3
4
5
.....
n
For an ABA series
No
1
2
3
4
5
.....
n
The standard deviation is calculated as follows:
• Differences ABBA or ABA series is calculated:
• The average value for differences for ABBA or ABA series:
A B
A
D
D
B
B A
− −
= −
B A
i
1 n
∑
X D
i i
n
=
i 1
78
A D = B
av
D
D
D
D
D
...
D
D = B – A
D
1
D
2
D
3
D
4
D
5
...
D
n
– A
av
1
2
3
4
5
n
av