SOLUTION: 9. The paired data below consist of the test scores of 6 randomly selected students and the number of hours they studied for a test. Find the value of the linear correlation coeff
Algebra.Com
Question 114506: 9. The paired data below consist of the test scores of 6 randomly selected students and the number of hours they studied for a test. Find the value of the linear correlation coefficient, r.
Hours studied 5 10 4 6 10 9
Test score 64 86 69 86 59 87
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Using the TI-83 LinReg function I get r = 0.2242..
-------------------
If you want to do it by hand:
Find the mean of the x values = x-bar
Find the mean of the y values =y-bar
Find the std dev of the x values = sx
Find the std dev of the y values = sy
----------------------------------------
Find the sum of the products [(x - x-bar)(y - y-bar)]/sxsy
for each x/y pair.
===============
Cheers,
Stan H.
RELATED QUESTIONS
Please explain.
The paired data below consist of the test scores of 6 randomly... (answered by Boreal)
2) The paired data below consist of the test scores of 6 randomly selected students and... (answered by CPhill)
Please explain:
The paired data below consist of the test scores of 6 randomly... (answered by Theo)
Please reveiw and explain if I have anything incorrect
The paired data below consist... (answered by Boreal)
2. The data below are the final exam scores of 10 randomly selected statistics students... (answered by lynnlo)
The data below are the final exam scores of 10 randomly selected statistics students and... (answered by ewatrrr)
The data given below are the final exam scores of 10 randomly selected statistics student (answered by stanbon)
The data below are the final exam scores of 10 randomly selected statistics students and... (answered by Boreal)
The following data consists of test scores and hours of preparation for 5 randomly... (answered by Fombitz)