Replication (statistics)

In engineering, science, and statistics, replication is the process of repeating a study or experiment under the same or similar conditions.

[1] ASTM, in standard E1847, defines replication as "... the repetition of the set of all the treatment combinations to be compared in an experiment.

The second type of replication is called “conceptual replication.” This involves testing the same theory as the original study but with different conditions.

[3] For example, Testing the same diet's effect on blood sugar levels instead of weight loss, using different measurement methods.

Both repeat and replicate measurements involve multiple observations taken at the same levels of experimental factors.

[5] Replicates Example: Testing a new drug's effect on blood pressure in separate groups on different days.

In replication studies within the field of statistics, several key methods and concepts are employed to assess the reliability of research findings.