If y = 18x+5 is the regression line of x on y then the value of bxy is what ?
1/18
18
To find the value of bxy, we need to understand the concept of regression coefficients in linear regression.
In linear regression, the regression coefficients represent the relationship between the independent variable (x) and the dependent variable (y). The regression coefficient bxy specifically represents the slope of the regression line.
Given that y = 18x + 5 is the regression line of x on y, we can see that the coefficient of x is 18. This means that for every unit increase in x, the corresponding value of y increases by 18 units.
Therefore, the value of bxy is 18.
To find the value of bxy, we can use the formula:
bxy = √(rxy * σx * σy)
In this case, we already have the regression line of x on y, which is y = 18x + 5. However, the regression line provides information about the relationship between y and x, not directly about the covariance or correlation between x and y.
To find the value of bxy, we need more information, specifically the covariance (σxy) or correlation coefficient (rxy) between x and y. These values are not mentioned in the given information, so we are unable to determine the exact value of bxy.
If you have additional information such as the covariance or correlation coefficient between x and y, please provide it, and I can help you find the value of bxy.