Честотата на въпросителните изречения в старобългарските текстове в сравнение с честотата на въпросителните изречения в съвременния български език и в другите славянски езици (по материали от художествената литература)

The following information is obtained from Slavonic literary texts, each one containing 20 kilophones: 1) the frequency of occurrence of the interrogative particle ли; 2) the frequency of occurrence of the disjunctive particle ли (the disjunctive conjunction или); 3) the frequency of use of the pronominal root к- in an interrogative context; 4) the frequency of use of the pronominal root к- in a non-interrogative context. The x2 criterion is used to test the null hypothesis for two empirical sets of data as to what extent the differences in the distribution of the interrogative ли, the disjunctive (и)ли, the interrogative-pronominal k- and the non-interrogativepronominal к- may be considered as accidental, i. e. to what extent the Slavonic language family may be considered as a homogeneous set with respect to the four above-mentioned constituents.