SOLUTION: What is the correlation coefficient with the following data points: (2,49), (45,2), (5,6)? A.) 0.62 B.) -0.62 C.) 0.52 D.) -0.52

Question 1083757: What is the correlation coefficient with the following data points: (2,49), (45,2), (5,6)?
A.) 0.62
B.) -0.62
C.) 0.52
D.) -0.52

Found 2 solutions by MathLover1, Edwin McCravy:
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
(2,49), (45,2), (5,6)

after you calculate that above, you get

...round it to two decimal places

so, answer is B.)

Answer by Edwin McCravy(20059) (Show Source): You can put this solution on YOUR website!

If you have a TI-83 or 84, Turn diagnostics on: Press 2nd Press 0 (zero) Press x^-1 Scroll down to DiagnosticOn Press ENTER twice [You won't have to do the above ever again.] Press STAT Press ENTER Make the screen read like this: L1 |L2 |L3 2 |49 |------ 45 |2 | 5 |6 | ------|------| Press STAT Press the right arrow to highlight CALC Press 4 Press ENTER five times Read this y=ax+b a=-.6680161943 b=30.57694737 r²=.378772069 r=-.615446108 That last number, r, is the correlation coefficient. Edwin

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