RESEARCH METHODOLOGY

Detailed explanation-1: -The symbol ‘2’ represents the population variance.

Detailed explanation-2: -The symbol ‘2’ represents the variance of that random variable. The term called the chi square statistic will be represented by the statistical formula as X2=[(n-1)*s2]/ 2. The X2 is being represented as the chi square statistic. ‘n’ represents the size of the sample.

Detailed explanation-3: -Variance and Standard Deviation Its formula is simple; it is the square root of the variance for that data set. It’s represented by the Greek symbol sigma ().

Detailed explanation-4: -The square of the population standard deviation is equal to the population variance, so 2 (sigma squared) is the most common symbol for the population variance.