Exam 3: Correlation and Regression

Which of the following is a measure of the accuracy of prediction?

Which of the following is a dichotomous variable?

The observation that Y decreases as X increases suggests

In the linear equation Y ´ = a + bX , " a " is called

In the linear equation Y´ = a + bX , " b " is called the

The Pearson product moment ____ is a ratio to determine the degree of variation in one variable that can be estimated from knowledge about variation in the other variable.

When you know nothing about a person's academic ability and have to make an estimate, the best strategy is to make the prediction based on the

Which of the following is used to show the relationship between a true dichotomous variable and a continuous variable?

Suppose we wanted to predict GPA in graduate school on the basis of undergraduate GPA, IQ, and professor ratings. The statistical method that would be most useful is

X and Y correlate .2. What is the coefficient of determination of this relation?

What do scatter diagrams do?

The amount of decrease observed when a regression equation is created for one population and applied to another is called

It is difficult to observe significant correlation between the GRE score and graduate school GPA among elite graduate students because of

What is the point of least squares for the set of scores [4, 6, 8, 10]?

The formula Y − Y ´ represents

The point at which the regression line crosses the Y axis is the

Which of the following is also the slope of the regression line?

The type of correlation coefficient used to find the association between two sets of ranks is called

The relationship between TV viewing and aggressive behavior might be influenced by poor social adjustment. Social adjustment here is regarded as a(n)____ problem.

In the formula Y´ = a + bX , Y´ is the