Dr Hyper Treated 20 Patients Using a New Therapeutic Procedure

question 85

Multiple Choice

Dr. Hyper treated 20 patients using a new therapeutic procedure. An outside observer rated the children's activity level on a laboratory task before and after the treatment; 80% of the children decreased their activity level following treatment, and Dr. Hyper concluded that the procedure was highly effective. In Dr. Hyper's experiment, what is the dependent variable?

• A)The children's diagnosis as hyperactive or not
• B)The presence of the observer
• C)The new therapeutic procedure
• D)The children's activity level

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Definitions:

Expected Frequency

The predicted count of occurrences for a particular category or event in a statistical distribution, based on a theoretical probability.

Sample Size

The number of observations or data points that are selected from a larger population for purposes of statistical analysis; essential to the reliability of study results.

Goodness-of-Fit Test

A statistical test used to determine how well observed data fit a specific distribution.

Contingency Table

A table often used in statistics to display the frequency distribution of variables to analyze the relationship between categorical variables.