In this research, we applied actual data related to the number of infections with the Corona virus for some Arab countries for the month of February of the year 2022, where the method of least significant difference (LSD) was used to find out the significant differences in the number of infections between any two Arab countries. First, the completely random design method (CRD) was used to obtain a table of analysis of variance (ANOVA) and to know in general whether there are significant differences in the number of injuries between Arab countries or not, by rejecting the null hypothesis 𝐻 0 , the method of least significance LSD was used to compare the number of injuries between Arab countries (Is there a moral difference or not).