Jack Crevalle - No limits on size or number kept. We don't catch many of these fish, but we have caught a few big ones (10 lbs and up) over the years. The big ones hit mostly live bait, small ones will bite on just about any bait and the large ones put up quite a fight. They will also hit fast moving artificial baits.
Theoretically, the Spearman correlation calculates the Pearson correlation for variables that are converted to ranks. Similar to Pearson's bivariate correlation, the Spearman correlation also tests the null hypothesis of independence between two variables.
Kendall Rank Coefficient The correlation coefficient is a measurement of association between two random variables. While its numerical calculation is straightforward, it is not readily applicable to non-parametric statistics. 1  For example, in the data set survey, the exercise level (Exer) and smoking habit (Smoke) are qualitative attributes. 2  A more robust approach is to compare the rank orders between the variables.