Test of normality and data transformation in SPSS HD
A short video demonstrating how to test whether a collection of data can be statistically distinguished from a sample drawn from a normal distribution. This test is carried out in SPSS. The video also shows the user how to log transform their data and then test whether this increases the degree to which these data approximate a sample from a normal distribution. Why do this? Well, a lot of commonly used statistical tests require the dependent variable to approximate a sample from a normal distribution.