Statistics – Spearman correlation
Hi, Pearson or Spearman’s correlation? The measurement level or normal distribution will lead you to the most correct correlation method. So if you have 2 scale variable that are both [...]
Statistics – Normality test
Hi, I got a comment from a SPSS developer person that has a LOT of knowledge. He mentioned after my blog post in August about normality, that it’s also possible to make a test of the [...]
Statistics – understand independent t-test
In this example I will make a t-test to test if males and females mean values of salary differs significantly from each other. To do a t-test the salary should be normal distributed for male resp [...]
Statistics – nonparametric pairwise test
Last Monday 13/8 I studied a difference between “stress after” and “stress before”, to see if this difference was normal or skewed distributed. The mean value of the [...]
SPSS Tips & Tricks #7 – Compute difference
Hi, this blog post will be a preparation for my blog post on Friday – about making a pairwise test. I have as you see a measurement of stress before and after a treatment period, for each [...]