This study was conducted on 760 students from 14 secondary schools in Selangor; with consideration to the
location of the schools. Based on the table presented by Krejcie and Morgan (1970), the sample size that should be
taken for rural area is 367 respondents ( to represent a population of 4,460 form four students from rural area),
and the sample size of students in the city is 377 respondents (based on the total of 19,703 form four students in
Selangor). Therefore, the minimum number of samples required to obtain a relevant population parameters are
about 744 respondents.