Trevor Plans to Study the Relationship Between People's Responses to Highly

question 166

Multiple Choice

Trevor plans to study the relationship between people's responses to highly stressful situations and their overall health.He decides he must use correlational research,rather than experimental research,to investigate this problem.Trevor most likely chose a correlational method because correlational studies

• A) tend to be more accurate than experiments.
• B) have higher internal validity than experiments when there are two dependent variables.
• C) can be used to study either positive or negative relationships, whereas experiments can only be used to study positive relationships.
• D) can be used to investigate factors that would be unethical to manipulate in an experimental study.

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Definitions:

Interquartile Range

A measure of variability, defined as the difference between the upper (75th percentile) and lower (25th percentile) quartiles.

Range

Range is the difference between the highest and lowest values in a set of data, indicating the spread or variability of the dataset.

Range

The difference between the highest and lowest values in a data set.

Variance

A measure of the dispersion or spread of a set of values, indicating how much the values differ from the mean of the set.