Roumporn Ruangroj. (2000) A comparison on power of tests for normality among Chi-square, Shapiro-wilk W statistic and Shapiro-francia W statistic. Mahidol University,:ม.ป.ท.Roumporn Ruangroj. 2000. A comparison on power of tests for normality among Chi-square, Shapiro-wilk W statistic and Shapiro-francia W statistic. ม.ป.ท.:Mahidol University,;Roumporn Ruangroj. A comparison on power of tests for normality among Chi-square, Shapiro-wilk W statistic and Shapiro-francia W statistic. ม.ป.ท.:Mahidol University, 2000. Print.