why is the participation rate variable in a t-test why is it important that the participation rate be independent? how does a chi square test determine whether a user participates what is independent participation why is an independent test statistically significant? why are participation events independent why are participation events independent why are software platforms not independent how do you compare data for different software how long are participation events independent why is participation statistically variable is participation independent why are participation rates independent what type of data can we compare across independent conditions what is the best way to compare software usage over time? what is the difference between independent data and independent data how are independent participation rates statistically tested why is it important to compare participation across conditions how to compare software usage across conditions how to compare participation over time