Variety of affective states are evoked by visual art. To explore the process of feelings towards art, we studied different patterns of figures. The affection of complex pattern to feelings of goodness is still undetermined mind process. Thus, the first objective was to reveal how physical properties of complex patterns affect pattern goodness. In this investigation, we used fractal dimension and standard deviation of distance to the nearest neighbor as objective indexes related to the subjective randomness. The second objective was to determine the changes of skin conductance which reflect people's feelings when they evaluate patterns as good. We asked participants to choose the best pattern among 39 different stimuli, in the continuously changing pattern. Consequently, we proposed that the subjective randomness might be related to an affection of feeling of goodness on patterns. Additionally, we found out the tendency of increase of skin conductance value after their decision making.