A History Instructor Has Given the Same Pretest and the Same

question 46

Multiple Choice

A history instructor has given the same pretest and the same final examination each semester. He is interestedin determining if there is a relationship between the scores of the two tests. He computes the linear correlationcoefficient and notes that it is 1.15. What does this correlation coefficient value tell the instructor?

• A) The history instructor has made a computational error.
• B) There is a strong positive correlation between the tests.
• C) There is a strong negative correlation between the tests.
• D) The correlation is something other than linear.

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Definitions:

Current Flow

The movement of electric charge through a conductor, producing electricity.

Voltage Divider Formula

A mathematical equation used to determine the output voltage across one of the resistors in a circuit that consists of two or more resistors connected in series.

General Voltage Divider

A circuit arrangement that divides the input voltage into smaller voltages, typically using two or more resistors.

Chassis Ground

Ground connection to the case of a piece of equipment.