Time remaining:
scatter diagram equation

Statistics
Tutor: None Selected Time limit: 0 Hours

Σx = 58, Σx2 = 886, Σy = 632, Σy2 = 89,322, and Σxy = 8,727, n=5

Compute r and round to 3 decimal places. I have tried 1.033 and 1.034, which are both "wrong" on my homework. 

Feb 6th, 2015

   

based on the above formula, you also need a value for n

r = (8727n - 58*632) /  [ sqrt(n*886-58^2) * sqrt(n*89322 - 632^2)]

r = (8727*5 - 58*632) /  [ sqrt(5*886-58^2) * sqrt(5*89322 - 632^2)]

r = (43635 - 36656)  /  [sqrt(4410-3364) * sqrt(446610 - 399424)]

r = 6979 /   [sqrt(1046) * sqrt(47186)]

r = 6979 /   [32.3419 * 217.2233]

r = 6979  /  7025.42 = 0.993

Remember that an r value should always fall between -1 and 1

Feb 6th, 2015

Studypool's Notebank makes it easy to buy and sell old notes, study guides, reviews, etc.
Click to visit
The Notebank
...
Feb 6th, 2015
...
Feb 6th, 2015
Dec 11th, 2016
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer