If a Regression Line Is Parallel to the Horizontal Axis

question 32

Multiple Choice

If a regression line is parallel to the horizontal axis of the scattergram, the slope (b) will be________.

• A) 1.00.
• B) -1.00.
• C) 0.00.
• D) 0.45.

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Definitions:

Root Mean Square of Errors

A measure of the differences between values predicted by a model or an estimator and the values observed, expressing the square root of the mean of the squares of these differences.

Actual Value

The true, factual, or real value of a measurement, differing from an estimated or theoretical value.

Forecast Value

The estimated or predicted value of a variable or set of variables at some point in the future.

Mean Square Error

A measure of the average of the squares of the errors—that is, the average squared difference between the estimated values and the actual value.