Detailed Instructions: In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
Problem:The best known is the Pearson product-moment correlation coefficient .
Solution:
The most familiar measure of dependence between two quantities is the Pearson product-moment correlation coefficient , or " Pearson 's correlation coefficient " , commonly called simply " the correlation coefficient " .