Hello, please I need advise on the testing of a normality. I have 5 types of objects in one diagram - grid, function, matrice, table and scalar for which I have measured time using a device that records eye movements (eye-tracking). I'll want compare it then (ANOVA or Kruskal-Wallis depends on normality). So can I test normality with Shapiro-Wilk test for each object separately or put data together? Thank you in advance for your answers.