If N = 40, Pearson r = 0.70 and p = 1e-4 then R-square = %. For a sample of biva

Question

If N = 40, Pearson r = 0.70 and p = 1e-4 then R-square = %. For a sample of bivariate data, the value of Spearman r is 0.81. Therefore, proof for causation between the two variables is insert the single best answer, o-e a. very high b. high c. unknown d. very low e. low Your research collaborator plans to perform a permutation test of the significance of a correlation but on how many permutations should be acquired from the observed data. Provide expert statistical advice that withstand peer review in a scientific would journal. How does correlation analysis resemble regression analysis? Provide a short single, clear answer.

Explanation / Answer

5] Rsquare = (r^2) = 0.70^2

Rsquare = 0.49

6] Here we have r = -0.81

A correlation between two variables does not emply causation therefore causation between two variables is unknown.

8] In correlation , there is a mutual relationship between the two or more variable . and in regression there is a linear relationship between two or more variables.

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