Matthew Is a Speech Writer for Politicians

Multiple Choice

Matthew is a speech writer for politicians. He wants to know if there is a relationship between the number of words in campaign speeches and the number of votes obtained. He randomly samples 50 politicians and gathers data on two variables: 1) the number of words used in their last known campaign speech (ratio level measurement scale) ; and 2) the number of votes received (ratio level measurement scale) . Which statistical procedure is most appropriate to use to test the hypothesis?

A) Pearson correlation coefficient
B) Phi coefficient
C) Spearman or Kendall tau's correlation coefficient