TEST OF NORMALITY RAW DATA Kolmogoro Kolmogoro Kolmogoro Shapiro Shapiro Shapiro
ID: 3128755 • Letter: T
Question
TEST OF NORMALITY RAW DATA Kolmogoro Kolmogoro Kolmogoro Shapiro Shapiro Shapiro v -Smirnoy v -Smirnov v -Smirnov Wilk -Wilk -Wilk Statisti df Sig. 914 18 .705 16 .808 17 Grou Statistic df Sig Respons A201 e Time 18 052 .102 Respons B 233 e Time 16 007 .003 Respons C 197 e Time 17 078 1. TEST OF NORMALITY TRANSFORMED DATA Kolmogoro Kolmogoro Kolmogoro Shapiro Shapiro Shapiro v-Smimov v-Smirnov v-Sminov -Wilk-Wilk Wilk Grou Statistic df Sig Statisti df Sig. 18 200 962 18 Respons A 135 e Time .634 Respons B 194 e Time 16 .110 .898 16 076 Respons C e Time 126 17 200 983 17 .981Explanation / Answer
Here, we testing the normality of the test on the basis of kolmogorov - smirnov and shapiro wilk test apply for untransformed and transformed data. In data set we have three group say A, B and C. Normality test result for untransformed data is given tabel 1 and transformed test result in table 2.
we see that when data is not transformed, On the basis of table 1, when apply the kolmogorov - smirnov test for all three group the we found that group A and C having insignicant i.e they follows the nornal distribution but group B is not follows the normal distribution. on the same data we also apply the shapiro wilk then we found that only group A follows the normal distribution but group B and C not follows the normal distribution because sig value is less than 0.05.
but we raw data is transformed for all given group then we apply the normality test (kolmogorov - smirnov and shapiro wilk) for each group. The test of the result recorded in table 2, the sig value of the all group in both test is insignificant i.e calculated p- value of all group are greater than 0.05. on the basis of test result we say that transformed data follows the normal distribution with certaine parameters.
finally we say that on the basis of the test result, if data is not followes the normal distribution, then we apply transformation method to get the transformed data follows the normal distribution.
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