You Are Presented with Data from Two Independent Samples

question 1

Multiple Choice

You are presented with data from two independent samples. The variable being measured is continuous. The distribution of the population of each sample is right skewed. You wish to test the hypothesis that there is a difference in the median value of the variable for the samples. Which of the following is the better method for testing whether the medians differ?

• A)Data transformation and t-confidence interval of transformed data
• B)Paired t-test
• C)Sign Test
• D)Mann-Whitney Test

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Definitions:

Control Group

A group in an experiment or study that does not receive treatment, used as a benchmark to measure the effects of the treatment.

Natural Experiments

Observational studies where the conditions are naturally occurring rather than being controlled or manipulated by the researcher, used to infer causality.

Random Experiments

Procedures or trials that yield different outcomes, each with a specific probability, even when repeated under the same conditions.

Vaccinated People

Individuals who have received vaccinations, which are medical treatments that provide immunity against one or several diseases.