Complex sentence: The average of the IQ of Baft students was 97 and this average was 91 for Kuhbanan students, in the both cities there was not any significant difference between the IQ of boys and girls.
Split into simpler sentences: The average of the IQ of Baft students was 97 while the average IQ Kuhbanan students was 91. In both of the cities there was not any significant difference between the IQ of boys and girls.