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

Question

Quizplus · Accepted Answer

The Pearson correlation coefficient is the most appropriate statistical procedure for testing the relationship between two variables measured on a ratio scale, such as the number of words in campaign speeches and the number of votes received.

Matthew Is a Speech Writer for Politicians