Hello all! Could anyone take a look at the SPSS data file I've attached here? It has two variables--a dependent variable for "noun phrase length", and an independent variable for "corpus name". I need to do an Independent Samples T-test to see if there is a significant difference between the two corpora in noun phrase length. However, data in the "length" variable is non-normally distributed, so I need to do a data transformation for a parametric T-test to be performed. I've tried the Lg10 function to transform the data, but the transformed data is still not normally distributed. Can I ask for your advice on what functions should be used for an effective transformation? Could you please directly work on the data and upload the transformed data?

If there's no way to transform the data to normality, does it mean I can only use non-parametric tests for my data?

Thank you very so much for your help!

If there's no way to transform the data to normality, does it mean I can only use non-parametric tests for my data?

Thank you very so much for your help!