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so I am having a problem to calculate the r-squared because the values of the variable (y and x) are not given in the question. All I have is the mean and the standard deviation of each variable as well as the scatter plot with pearson correlation value.

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From Wiki:

In linear least squares regression with an estimated intercept term, $R^2$ equals the square of the Pearson correlation coefficient between the observed $y$ and modeled (predicted) $f$ data values of the dependent variable. In a univariate linear least squares regression, this is also equal to the squared Pearson correlation coefficient of the dependent $y$ explanatory $x$ variables.

So square your Pearson correlation to get the $R^2$ value if you have simple linear regression, which I assume you do.

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  • $\begingroup$ I am not sure if that what I am supposed to do because the questions has 4 marks so squaring the correlation won't do ! $\endgroup$ – Wonder Women Nov 19 '17 at 20:26

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