The two different normalization schemes of factorial moments are analyzed carefully. It is found that in both the cases of fixed multiplicity and of intermittency independent of multip- licity, the intermittency indexes obtained from these two normalization schemes are equal to each other. In the case of non-fixed multiplicity and intermittency depending on multiplicity. the formulae expressing the intermittency indexes from the two different normalization sche- mes in terms of the dynamical index are given. The experimentally observed dependency of in- termittency degree on transverse momentu...