Answer:
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Answer:
Engaging in less physical activity.
Explanation:
Health-related behaviors: This refers to practices, activities or personal attributes, and habits that can put at risk or enhance the overall performance of the participants including mental, psycho-social, and physical well-being.
Examples: Physical activity, diet, coping with stressful events, and sleep are the factors that can get affected by health-related behaviors.
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The research error described above is an example of selection bias.
Selection bias takes place when, from a population of interest, a group of individuals is selected in order to construct a sample but without a proper randomization. The result is a sample which is not representative of the underlying population.
According to the example, the target population of the research comprises all students but the sample only includes boys. Hence, selection has not been random because it followed a gender criteria, and the results obtained using it cannot be applicable to the whole population because they are affected by a selection bias.
