Skobeltsyn Institute of Nuclear Physics
Lomonosov Moscow State University

The first of purported series of papers with systematic analysis of data for
photoproduction of eta-mesons on nucleons. The method of the analysis comprises
two stages: at first we consider describing of angular distributions (linear
regression) and then extract multipol amplitudes (nonlinear problem). It's shown
the data of different groups about relative role of multipol amplitudes are
inconsistent.