PT Journal AU POLCIC, L TI RESULTS OF THE CORRELATION ANALYSIS SO Trends in education PY 2009 BP 183 EP 186 VL 2 IS 1 DE correlation analysis; correlation coefficient; control group; experimental group. AB In this article the author analyses the relations among variables from the point of view of their coherence, in other words to what extent do the chosen techniques follow the different variables, phenomenons and to what extent they are related. ER