A Least Squares Regression Line

question 130

Multiple Choice

A least squares regression line

• A) can be used to predict a value of y if the corresponding x value is given.
• B) implies a cause-and-effect relationship between x and y.
• C) can only be determined if a good linear relationship exists between x and y.
• D) ensures that the predictions of y outside the range of the values of x are valid.

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Definitions:

Sympathetic Nervous System

Part of the autonomic nervous system that prepares the body for quick response to stress by accelerating the heart rate and increasing blood pressure, among other functions.

Adrenal Medulla

The inner part of the adrenal glands that secretes adrenaline and noradrenaline, involved in the body's fight-or-flight response.

Hormones

Chemical messengers produced by glands in the body that regulate various functions by traveling through the bloodstream to tissues and organs.

General Adaptation Syndrome

A theoretical framework describing the body's short-term and long-term reactions to stress, consisting of three stages: alarm, resistance, and exhaustion.