[The stepwise statistical analysis of free behavior in rats]. / Poétapnyi statisticheskii analiz svobodnogo povedeniia krys.

Logically justified sequential application of a number of statistical methods makes it possible to describe comprehensively free behavior of animals. In particular, only in the free behavior experiments it was shown that some behavioral indices of August rats were less variable than those of Wistar rats. Moreover, the results of statistical analysis suggest that August rats are less resistant to stress than Wistar. Additional studies had to be conducted earlier in order to draw the analogous conclusions. On the basis of application of correlation and multivariate statistical analysis it was shown that the horizontal motor activity can be the most important characteristic describing the free behavior due to its maximal informativity.