were categorized into 6 age groups as follows ( 20-24), ( 25-29), ( 30-34), ( 35-39),( 40-44),(45-up). 38 (40%) of whom were males and 57 (60%) were females. Moreover, a large proportion of participants were at MA (85.3%) and just (14.7%)of whom were at PhD level.
۴.۳. Test data normality
Calculating skewness and kurtosis

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