Arash Wants to Examine the Relationship Between Stress and Eating

question 19

Multiple Choice

Arash wants to examine the relationship between stress and eating when someone is on a diet. He recruits an equal number of male and female participants to respond to a questionnaire about their eating habits, their typical mood, and their overall anxiety levels. Arash ensures half of his male participants and half of his female participants are on a diet and the other half are not. After the questionnaire, all participants are randomly assigned to complete one of two tasks. Half of the participants solve a difficult math problem in front of a group of math professors within a certain time limit. The other participants solve a simple arithmetic problem in a waiting area alone, with no time limit. After they perform the task, all participants are asked to complete one more questionnaire about their stress level while sitting next to a box of Timbits. Arash tells the participants to help themselves to the Timbits, and secretly counts how many Timbits the participant actually eats.
-Arash found that regardless of whether the female participants were on a diet or not,there was a correlation of +0.70 between their reported stress level and the number of Timbits they ate.This is an example of a _____ correlation.

• A) strong
• B) moderate
• C) weak
• D) significant

Recognize the criteria for choosing predictors in multiple regression.

Apply linear regression formulas to predict outcomes based on given predictor variables.

Acknowledge the importance of correlation in the prediction process and error estimation.

Distinguish between dependent, independent, criterion, and predicted variables in the context of regression.

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Definitions:

Percentage

A mathematical term that represents a number or ratio expressed as a fraction of 100.

ADHD

Attention Deficit Hyperactivity Disorder, a neurodevelopmental disorder characterized by inattention, impulsiveness, and hyperactivity.

Stimulant Medications

Drugs that increase alertness, attention, and energy by boosting the levels of certain neurotransmitters in the brain.

Sedatives

Drugs that soothe or quiet restlessness or agitation.