Procedure of statistics
- Factor of correlation is calculated by the formula:
Studied signs
| Ranks
| d
(X-Y ranks)
| d2
| X
(substances)
| Y
(general disease of children's population)
| X
(substances)
| Y
(general disease of
children's population)
|
|
|
|
|
| Σ
| Estimation of correlation factor:
Character of links is expressed by a sign “+” - positive links, “-“ - negative links;
Force of links is expressed by ratio: 0 - absence of links, up to 0.3 - weak links; up to 0.7 - average links; up to 1.0 - strong links.
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