Exam 23: Bivariate Statistical Analysis: Measures of Association

The measure of association used in the textbook is the Pearson product-moment correlation coefficient and its symbol is r.

In regression,the standardized Y-intercept term is always 1.

The ordinary least-squares method of regression analysis is based on the logic of how much better a regression line can predict values of Y compared to simply using the mean as a prediction.

If the regression equation is: Y = 24.35 - 14.2 X ,then 24.35 is the ____,while -14.2 is the ____.

In a regression equation,the slope of the line,b,is the change in X that is due to a corresponding change of one unit of Y.

In most business research,the estimate of a in a regression equation is most important.

The equation,Y = a + b X,is the equation for the:

All of the following are simple regression estimation techniques EXCEPT:

In a regression equation,the slope of the regression line is denoted by the symbol ____________________.

In the regression equation,Y = a + b X,a is the symbol for the:

The first step in interpreting simple regression output is to interpret the overall significance of the model.

The statistical measure of the association between two variables is known as the ____________________ coefficient.

If the correlation coefficient is - 0.62,the coefficient of determination is approximately:

When the on-time performance of airlines is used to predict the number of customer complaints in a regression equation,on-time performance is the ____ variable and the number of customer complaints is the ____ variable.

The statistical significance of a regression model is determined using which test?

The correlation coefficient,r,indicates the magnitude of the linear relationships but not the direction of that relationship.

If the number of coupons given out at shopping malls is used to predict the number of tickets that will be sold to a country and western band's performance at a local club,the number of coupons is the ____________________ variable.

In a correlation matrix,the values in the main diagonal equal ____________________.

In regression analysis,the dependent variable is also called the ____ variable.

The test for the statistical significance of the regression model is the ____________________ test.