For a data set of brain volumes (cm³) and IQ scores of seven males, the linear correlation coefficient is r = 0.288.
Use the table available below to find the critical values of r.
Based on a comparison of the linear correlation coefficient r and the critical values, what do you conclude about a linear correlation? What are the critical values?
The critical values are:
Number of Pairs of Data n Critical Value of r
4 0.950
5 0.878
6 0.811
7 0.754
8 0.707
9 0.666
10 0.632
11 0.602
12 0.576