Which of the Following Observations Is an Example of a Positive

question 55

Multiple Choice

Which of the following observations is an example of a positive correlation?

• A)When a population's vitamin D intake decreases,the percentage of people in the population that have healthy immune systems decreases.
• B)When a population's intake of plant foods decreases,the percentage of obese people in that population increases.
• C)When a population's level of physical activity increases,the percentage of people who develop heart disease decreases.
• D)When a population's intake of vitamin A decreases,the percentage of people in the population who develop blindness increases.

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Definitions:

Amplitude

The height or depth of a wave from the average level to the peak or trough, indicating the strength or intensity of the wave.

Microvolts

A unit of electric potential equal to one millionth of a volt, often used in measuring the electrical activity of neurons and muscles.

EEG Experiment

A test or study involving the recording of the electrical activity of the brain through electrodes placed on the scalp.

Desynchronization

A state where natural biological rhythms, such as sleep patterns, become out of sync with environmental cues.