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A science lab in Arizona is given a list of data with x listing as 1,2,3,4,5 andy listing as 2,4,6,8,10. The scientists wish to find the correlation coefficient of the data table. What would be their first step? Which of these statements are true? average out the list of numbers. average the sum of products convert each variable into standard units. take the square root of the products. none of the above.

You may use the calculator above and this area as scratch paper. To see the solution just click on the button.

Carlos Rodriguez <carlos@math.albany.edu>

This problem was contributed by a student in Elementary Statistics. It is offered as it is with no warranty of any kind
Last modified: Wed May 13 12:29:11 EDT 1998