A group of 60 volunteers who do not regularly exercise are randomly assigned to one of two fitness programs.  One group of 30 is enrolled in a daily walking program, and the other group is put into a jogging program.  After a period of 6 weeks, the two groups are compared based on their scores on a wellness index.   What kind of a study is this? (Observational or experimental)     If the study shows that the joggers score better than the walkers, is this association of cause-and-effect?  Why?

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A: O E (O-E)^2 (O-E)^2/E 34 43.28812 86.26917 1.992906 23 20.69691 5.30421 0.25628 18 11.01497…

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A: Solution Given table is the contingency table between two categorical variable.

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A: Solution Causation and correlation are different and causation  do not provide correlation.

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Q: analyze her data

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