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You generate a scatter plot using Excel. You then have Excel plot the trend line and report the equation and the value. The regression equation is reported as Y = — 80.94x + 69.73And r ^ 2 = 0.81.What is the correlation for this data set?r=

Respuesta :

Given:

Coefficient of Determination = r² = 0.81

Recall, the relationship between coefficient of Determination and Correlation.

[tex]\text{ Coefficient of Determination = \lparen Correlation Coefficient\rparen}^2[/tex]

We get,

[tex]\text{ r}^2\text{ = 0.81}[/tex][tex]\text{ }\sqrt{r^2}\text{ = }\sqrt{81}[/tex][tex]\text{ r = 0.9}[/tex]