Is there a strong correlation between the number of miles driven by a salesperson and sales volume achieved? Data were gathered from nine salespeople who worked territories of similar size and potential. Determine the correlation coefficient for these data. Assume the data are ordinal in level of measurement. Miles per Sales Month $150,000 1,500 210,000 2,100 285,000 3,200 301,000 2,400 335,000 2,200 390,000 2,500 400,000 3,300 425,000 3,100 440,000 3,600 Appendix A Statistical Tables (Round your answer to 3 decimal places, e.g. 1.575.)