A Research Methods Student Conducts a Study on the Relationship

question 53

Multiple Choice

A research methods student conducts a study on the relationship between people's level of extroversion and the number of close friends they have. She computes Pearson's r, which comes out to be - 1.70. Which of the following is most clearly true?

• A) The relationship between the two variables is weak.
• B) More extroverted people have fewer friends.
• C) She ought to use a bar graph to display her results.
• D) She made an error in computing Pearson's r.

Analyze the impact of serving size and eating habits on consumption and weight.

Explain the role of physiological responses in the experience and interpretation of emotions.

Comprehend how emotions can be influenced by physical states, such as arousal and hunger.

Understand the significance and roles of various societal elements during the Gilded Age, including "great cities," immigration patterns, and social institutions.

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Definitions:

Sympathetic Nerves

Part of the autonomic nervous system, these nerves prepare the body for stress-related activities, often described as the "fight or flight" response.

Ventricular Contraction

The phase of the heart cycle in which the ventricles contract, pumping blood out of the heart to the body and the lungs.

Cardioregulatory Center

A region in the brain, specifically in the medulla oblongata, that regulates heart rate and blood pressure in response to changes in the body such as physical activity or stress.

Medulla Oblongata

The lowest region of the brainstem, controlling vital functions such as heart rate, breathing, and blood pressure.