regression line in r

Which of the following statement(s) is/are true? I. If the correlation coefficient is significant, the equation of the regression line cannot be determined. II. The values of the dependent variable can be predicted for the values of the independent variable using the regres..

The formula for the standard error of the estimate for the predictions made with a regression line is => I or II or III or IV..

State which of the following statement(s) is/are true. I. Regression analysis is a measure of the relationship between two variables. II. In regression analysis, there are two types of variables, regressor variable and regressed variable. III. The line of ..

Which fraction is represented by the point R on the number line? => 17 10 or 19 11 or 18 11 or 18 10..

Which number does the point R represent on the number line? => - 4 or - 3 or - 6 or - 5..

Which of the following statement(s) is/are false? I. The multiple correlation coefficient is always higher than the individual correlation coefficients. II. The coefficient of multiple determination denoted by R 2 , is the amount of variation explained by the regression model. I..

Which of the following statement(s) is/are true? I. A multiple regression equation with three independent variables x 1 , x 2 and x 3 and one dependent variable would have the form y′ = a + b 1 x 1 + b 2 x 2 + b 3 x 3 . II. A multiple regression equation with two independe..

On the number line shown, what number does point R represent? => 3.6 or 2.5 or 2.6 or 3.5..

(Two-point form) Here, we assume that x 1 x 2 ; in case x 1 = x 2 , then the line is vertical and its equation is x = x 1 (or x 2 ) The equation of the straight line passing through (x1, y1) and making angle q with the positive direction of x-axis is given by (Distance form) Whe..

Which of the following statement(s) is/are true? I. A residual is the difference between the actual value y and the mean of the y values y ‾ . II. A regression line is also called a least squares line. III. The coefficient of determination is the ratio of the e..