Your Text Mentions a Study in Which Violence Levels in a Community

question 20

Multiple Choice

Your text mentions a study in which violence levels in a community were assessed before and after the introduction of television. Which of the following statements about this study is FALSE?

• A) The study is observational in nature.
• B) The study's external validity is high.
• C) The study demonstrates a causal relationship between televised aggression and violence.
• D) The study lacks a control condition.

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Definitions:

Coefficient Of Variation

A standardized measure of dispersion of a probability distribution or frequency distribution, calculated as the ratio of the standard deviation to the mean, expressed as a percentage.

Range

The difference between the highest and lowest values in a dataset.

Coefficient Of Variation

A standardized measure of the dispersion of a probability distribution or frequency distribution.

Chebysheff's Theorem

A statistical theorem that provides a minimum probability for the distribution of values within k standard deviations from the mean for any data set, regardless of the distribution's shape.