The Most Important Advantage of Experiments Over Observational Studies Is

question 36

Multiple Choice

The most important advantage of experiments over observational studies is

• A) experiments are usually easier to carry out.
• B) a well-designed experiment can give good evidence that the treatments actually cause the response.
• C) an experiment can compare two or more groups.
• D) we can use randomization to avoid bias in designing an experiment.
• E) we can study the relationship between two or more explanatory variables.

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Definitions:

Standard Deviations

A measure of the dispersion or spread of a set of numbers, showing how much variation exists from the average.

Measures Of Location

Statistical metrics that indicate the central or typical value within a data set, including mean, median, and mode among others.

75th Percentile

A value below which 75% of the data in a dataset falls, indicating the upper quartile of the distribution.

Quartile

A type of quantile which divides a rank-ordered data set into four equal parts.