dolution
dolution.
Graduation Rates PayScale is a company that reports statistics on colleges and universities. Go to the book’s website to obtain the data file 11_3_24 using the file format of your choice for the version of the text you are using. The data contain the four-year cost and graduation rate for over 1300 colleges and universities. Do schools that charge more have higher graduation rates? The variable “2013 Cost” represents the four-year cost of attending the college or university. The variable “Grad Rate” represents the percentage of incoming freshman who graduate within six years.
(a) Draw a scatter diagram treating “2013 Cost” as the explanatory variable and “Grad Rate” as the response variable.
Save your time - order a paper!
Get your paper written from scratch within the tight deadline. Our service is a reliable solution to all your troubles. Place an order on any task and we will take care of it. You won’t have to worry about the quality and deadlines
Order Paper Now(b) Determine the correlation coefficient between “2013 Cost” and “Grad Rate.”
(c) Is there a linear relation between “2013 Cost” and “Grad Rate”?
(d) Find the least-squares regression line.
(e) Is the graduation rate of Harvey Mudd College higher than would be expected among all schools that charge $229,500? Explain.
(f) What proportion of the variability in graduation rates is explain by the 2013 cost of attending?
"Looking for a Similar Assignment? Get Expert Help at an Amazing Discount!"
