HELP please :) excel

gh1991

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14 years ago

HELP please :) excel

what information is provided by the correlation coefficient (R^2)?

what is the best line drawn through the data points in excel graph called?

-thank yuo in advance\!

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bio_man

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Educator

14 years ago

The correlation coefficient is a number between 0 and 1. It indicates if there is a relationship between the two variables (x and y). If there is no relationship between the predicted values and the actual values the correlation coefficient is 0 or very low (the predicted values are no better than random numbers). As the strength of the relationship between the predicted values and actual values increases so does the correlation coefficient. A perfect fit gives a coefficient of 1.0. Thus the higher the correlation coefficient the better. between 0.5 and 0.8, it is a moderate relationship, between 0.8 and 1 is a strong and between 0 to 0.49 is a weak relationship. It can also be denoted as negative (if there is a decline) and positive (if there is an incline).

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