I have three different exploration categorical groups and need to check the difference between each category. For this, I have used the Kruskal wallies -H test which uses to test the difference between each group.

The categories were measured by several indicators and I need to test whether there is any difference between the scores generated by each indicator. ( but not within the categories).

E.g Exploration categories- A, B, C

measurement of the category "A" - Indicator 1(measured by Likert scale), Indicator 2 (measured by Likert scale), Indicator 3(measured by Likert scale).

Q1.Differences between each category were measured by the Kruskal wallies -H test. Is this correct?

Q2-What should I use to measure the difference between indicators- as these are related, can I use Friedman's mean rank?

Q3-what does Kolmogorov–Smirnov test generate? can I use it to test any of the above?