Shapiro-Wilks Test
What is it?
For relatively small datasets (n<= 2,000), Shapiro-Wilk's test is used to examine the level of 'normality' of a dataset, so how close to a perfect normal distribution it is. For any dataset which you are assuming is normally distributed it's W should be at or very close to 1.
If you would like to test normality you should use the Kolmogorov-Smirnov test.
How Do I Carry Out A W Test In SPSS?
When you have entered your data into SPSS offers a very simple way to carry out this test. Simply select ANALYZE, DESCRIPTIVE STATISTICS and finally, EXPLORE. Then choose the Plots option and tick "Normality plots".
What is it?
For relatively small datasets (n<= 2,000), Shapiro-Wilk's test is used to examine the level of 'normality' of a dataset, so how close to a perfect normal distribution it is. For any dataset which you are assuming is normally distributed it's W should be at or very close to 1.
If you would like to test normality you should use the Kolmogorov-Smirnov test.
How Do I Carry Out A W Test In SPSS?
When you have entered your data into SPSS offers a very simple way to carry out this test. Simply select ANALYZE, DESCRIPTIVE STATISTICS and finally, EXPLORE. Then choose the Plots option and tick "Normality plots".
