Question

If the percentage of variability in dependent variable Y explained by the regression equation based on independent variable X is 81% and the slope is given as 1.25.

What is the value of the correlation coefficient?
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Answer 1

Explanation:

The correlation coefficient is a measure of the strength and direction of the relationship between two variables. It ranges from -1 to 1, with -1 indicating a strong negative relationship, 0 indicating no relationship, and 1 indicating a strong positive relationship.

To find the correlation coefficient in this case, you can use the formula:

correlation coefficient = (slope * standard deviation of Y) / standard deviation of X

Plugging in the values you provided, we have:

correlation coefficient = (1.25 * standard deviation of Y) / standard deviation of X

The value of the correlation coefficient depends on the standard deviations of Y and X, which you have not provided. Without these values, it is not possible to calculate the correlation coefficient.