Use the Guidelines to Evaluate the Study

question 129

Multiple Choice

Use the guidelines to evaluate the study. From the information given, what is the biggest flaw in the study?
-"38% of adults in the United States regularly visit a doctor". This conclusion was reached by a college student after she had questioned 520 randomly selected members of her college. What is
Wrong with her survey?

• A)Selection bias
• B)Wording of question
• C)Setting may not encourage honest responses
• D)Participation bias
• E)Confounding variables

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Definitions:

Sample Variance

A measure of the variability or spread of a sample data set, calculated as the average of the squared differences from the sample mean.

Sample Mean

The mean of a collection of numbers, determined by adding all the values together and then dividing the total by the count of values in the set.

Median

The middle value in a dataset when arranged in ascending or descending order, effectively dividing the dataset into two equal halves.

Central Tendency

A statistical measure that identifies a single value as representative of an entire distribution of data, typically the mean, median, or mode.