With the growth of internet service providers, a researcher decides to examine whether there is a correlation between cost of internet service per month (rounded to the nearest dollar) and degree of customer satisfaction (on a scale of 1 - 10 with a 1 being not at all satisfied and a 10 being extremely satisfied). The researcher only includes programs with comparable types of services. A sample of the data is provided below.
dollars 11 18 17 15 9 5 12 19 22 25
satisfaction6 8 10 4 9 6 3 5 2 10
- Compute the correlation coefficient.
- What does this statistic mean concerning the relationship between amount of money spent per month on internet provider service and level of customer satisfaction?
- What percent of the variability is accounted for by the relationship between the two variables and what does this statistic mean?