Exam 14: Regression Analysis

Predict a Y value for a known X value of 110.00

The regression of Y on X is used to predict X, given information on a third variable.

The standard error of multiple estimate may be used when making predictions from

For the Pearson r, the greater the number of degrees of freedom, the greater the likelihood of

The regression line's point of intercept designates

In the regression equation for Y on X, the "a" term symbolizes

Each single data point on a scatter plot represents a pair of scores.

When all of the internal correlations are significant, then the multiple R must always be significant.

If the Y intercept equals 50, then a Y value of 50 corresponds with an X value of 0.

The higher the correlation between X and Y, then

When a correlation value among three or more interval-data variables is required, then the appropriate statistical test is

The slope of the regression line

The most accurate predictions are made when the standard error of estimate equals

In order to calculate the standard error of estimate, the value of the Pearson r must be known.

For questions below, use the following: A researcher collects the following measures: Y mean = 50, with a standard deviation of 10 X1 mean = 100, with a standard deviation of 15 X2 mean = 200, with a standard deviation of 20 Significant correlations among the variables were found to be as follows: y and 1 = .60 y and 2 = .75 1 and 2 = .20 -Calculate the standard error of multiple estimate.

A major difference between the Pearson r and the multiple R is that the multiple R requires the use of

In a two variable linear regression, the intercept indicates the value of when X is at its minimum value.

The regression of Y on X allows for

The higher the value of the Y intercept

Whenever the correlation has a positive value, so too will the