Which Correlation Coefficient Indicates the Strongest Relationship Between Two Variables?​

question 15

Multiple Choice

Which correlation coefficient indicates the strongest relationship between two variables?​

• A) ​0.75
• B) ​-0.20
• C) ​-0.80
• D) ​0.55

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Definitions:

Circadian Clock

An internal biological clock regulating the sleep-wake cycle and other physiological processes on roughly a 24-hour cycle.

Internal Clock

An innate mechanism that regulates physiological and behavioral functions in a roughly 24-hour cycle, also known as the circadian rhythm.

Pineal Gland

A small endocrine gland in the brain, secreting melatonin and involved in regulating sleep patterns.

Thyroid Gland

The endocrine gland that produces thyroxine and regulates metabolism.