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Stichworte: Regression calculus
Given two regression lines 5x+7y 22 and 6x+2y 20 find mean values of x and y
Based on the data shown below, calculate the regression line (each value to two decimal places)
Which of the following is not valid assumption for performing linear regression?
Is the proportion of the total variation in the dependent variable explained by the regression model?
Which among the following analysis deals with how one or more variable affect change in another variable?
Since outliers can greatly affect the regression line they are also called _______ points.
The two regression lines are 16x 20y 132 0 and 80x 30y 428 0 the value of correlation coefficient is
If two variables are significantly correlated, this means that one variable causes the other.
Which of the following best describes the relationship between correlation and slope of the regression line?
In regression analysis if the dependent variable is measured in dollars, the independent variable
In a regression analysis, the variable that is used to predict the dependent variable ______.
In a regression analysis if SST = 4500 and SSE = 1575, then the coefficient of determination is
If the two regression lines are 3x = y and 8y = 6x, then the value of correlation coefficient is
The two lines of regression are 3x + 4y + 8 = 0 4x + 3y 1 the means of x y will be respectively
When x is dependent and y is independent then the equation of line of regression of X on Y is x a bY
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