Question: Data for four different populations are distributed as shown below. Which of the following would require use of non-parametric tests? (Select all that apply) A.

Data for four different populations are distributed as shown below. Which of the following would require use of non-parametric tests? (Select all that apply) A. graph has a normal curve B. graph has a positive skew C. the distribution of this graph rises, then decreases, then rises, and decreases again D. the graph only has two date points that are rising

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