document.write( "Question 1139084: Please reveiw and explain if I have anything incorrect
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\n" ); document.write( "The paired data below consist of the test scores of 6 randomly selected students and the number of hours they studied for the test. Calculate to determine the correlation coefficient? Does this indicate a good fit - why or why not?
\n" ); document.write( "Hours: 5,Score: 64; Hours: 10, Score: 86; Hours: 4, Score: 69; Hours: 6, Score: 86; Hours: 10, Score 59; Hours: 9, Score: 87. \r
\n" ); document.write( "\n" ); document.write( "correlation coefficient = 0.22 (rounded to the nearest hundred)
\n" ); document.write( "Does this indicate a good fit? No due to the relationship between the hours and scores are weak and the correlation coefficient is not close to 1, which would be a good fit.
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Algebra.Com's Answer #756930 by Boreal(15235) $\"\"$ $\"About$

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The correlation coefficient is correct. It is not a good fit, because its value is well below 0.7, which can be taken as a lower border (by some) as a good fit. There is some correlation, but it would be considered weakly positive.
\n" ); document.write( "One can regress the data, but with such a small r (and an r^2 of 0.05, which is very small), the assumptions for regression likely are not reached. \n" ); document.write( "

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