I'm interested in seeing if there is a correlation between number of hours someone drives and the amount of fuel ( in gallons) that are left in the tank. I'm starting with a pilot test using data of 4 people. 1st person number of hours driving x=3 , gallons of fuel left y=4, 2nd person x=2,y=5 , 3rd person x=1,y=9 4th person x=6,y=2.
- What is the correlation coefficient for the data above ?What does it tell me about the relationship between hours of driving and the number of gallons in the tank?
- What are the least-squares regression line ?
- The least-squares regression line from question (2), what does it tell me about the predicted level of gas if I drove 5 hours?