Parameters and statistics of models made for selected companies of the Warsaw Stock Exchange

For the WIG, WIG20 and mWIG40 indices, no day, week or month statistically differs from the average level of the index, which indicates no anomalies. The situation is different only for the index of small companies. In the case of sWIG80, the mean values on Friday, week 5 and 6, and during January, February and June were statistically different at the level of 1%. The second week of the month also turns out to be statistically different at the significance level of 5%. The study of the mean in the case of sWIG80 indicates the same periods as previously indicated during the preliminary comparison of the means in the first part of the study.