6. Which of the following is an assumption of the chi square test?

The data must be normally distributed.

The data must be from a random or representative sample.

There must be at least 5 participants in each cell of the contingency table.

The categories in the rows of the contingency table must add to 1.0

There must be no more than 2 categories in the rows or columns of the contingency table.

10- DNP student Jin has collected data in his practice on how long an artificial knee lasts and how much weight patients lose after surgery (because they are more mobile with the new knee). Which of the following facts about his data is a violation of the assumptions of regression analysis (making it difficult to analyze the relationship between weight loss and life of the artificial knee)?

The data on the life of the artificial knee were normally distributed.

The data were randomly sampled from all patients who had knee replacements.

The plot of weight loss and life of the artificial knee showed heteroscedasticity.

The data consisted of paired samples of data from each patient.None of the above is a violation.