Find the value for the correlation coefficient r 

x | 5,  1,  4, 2, 3 
--------------------
y | 5, 10, 12, 4, 8 

Can anyone help?

It's a terrible formula! But if you have a TI-83 
or TI-84, you can find it easily.

First you have to turn the Diagnostics On; 
otherwise the correlation coefficient won't
be displayed with the regression line equation.

You press 2nd 0 for CATALOG
Scroll down alphabetically to Diagnostics On
Press ENTER and you'll see "Done".

Then they will stay on as long as you don't
turn the Diagnostics Off

--------------

Now press STAT 1

Put

5 1 4 2 3 in L1

and

5 10 12 4 8 in L2

Press STAT and the right arrow to highlight CALC

Press 4 for  LinReg(ax+b)

Then press ENTER

You see

LinReg
 y=ax+b
 a=-.2
 n=8.4
 r²=.0089285714
 r=-.0944911183

That value of r is the regression coefficient.
That is very small in absolute value, which
means that the points are not very close to 
falling in a straight line.

Edwin
 

  

RELATED QUESTIONS

Find the value for the correlation coefficient r:

x  5, 1, 4, 2, 3... (answered by stanbon)

Find the value for the correlation coefficient r.
x = 5 , 1
y=  5 ,... (answered by stanbon)

compute r, the correlation coefficient, using the following data
x    2    1     6    8   (answered by ewatrrr)

1. Find the value for the correlation coefficient r.

x    10  8  7  12  14  5
y    20  (answered by Fombitz)

Construct a scatter plot using excel for the given data. Determine whether there is a... (answered by Fombitz)

Calculate coefficient of correlation from the following data. 
X 1 2 3 4 5 6 7 8 9
Y 9... (answered by ikleyn)

Please some one i need some help on these questions i missed my class and i am not... (answered by Fombitz)

This table shows 10 observations of a pair of variables (x, y). The variables x and y are  (answered by stanbon)

If anyone can help me with these questions I would really appreciate it!!!!

Using the... (answered by stanbon)