Correlation Test Example. The formula for the test statistic is t r n 2 1 r2 t r n 2 1 r 2. This table gives us a good idea of whether the computed value of r is significant or not.
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95 critical values of the sample correlation coefficient table. P value tdist 4 737 48 1 9 8e 06 05 α one tail tcrit tinv 2 05 48 1 677 4 737 tobs. Finally we perform either one of the following tests.
Df n 2 10 2 8 df n 2 10 2 8.
And so we reject the null hypothesis and conclude there is a non zero correlation between poverty and infant mortality. And so we reject the null hypothesis and conclude there is a non zero correlation between poverty and infant mortality. As an example suppose you computed r 0 801 r 0 801 using n 10 n 10 data points. 95 critical values of the sample correlation coefficient table.
