Posted by **Tom** on Sunday, May 26, 2013 at 10:58am.

Does studying for an exam pay off? The number of hours studied, x, is compared with the exam grade received, y.

x 7 7 5 5 7

y 95 90 75 85 95

(a) Complete the preliminary calculations: SS(x), SS(y), and SS(xy).

Incorrect: Your answer is incorrect. . (SS(x))

Incorrect: Your answer is incorrect. . (SS(y))

Incorrect: Your answer is incorrect. . (SS(xy))

(b) Find r. (Give your answer correct to three decimal places.)

My answers were (a) 100.9, 19640 and 1396. (B) 7.04 But wrong can someone help????

- statistics -
**PsyDAG**, Sunday, May 26, 2013 at 1:06pm
Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you.

See your later post.

- statistics -
**Tom**, Sunday, May 26, 2013 at 1:09pm
Sorry, did not realize that I had done it twice was working on different problems...thought I had posted another question.

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