Regression to the Mean
Regression to the Mean is a statistical phenomenon where the average score of a group, which initially had extreme scores (either exceptionally high or low), tends to move closer to the overall average when a second test is taken by the same group. This phenomenon can be observed regardless of the order in which the tests are taken. Statistics The concept of Regression to the Mean is similar to the Law of Large Numbers, which states that as the number of trials or observations increases, the average outcome will converge to the expected value.
To separate the effects of luck from ability, it is recommended to conduct a retest. By doing so, the influence of random variations can be minimized, allowing for a more accurate assessment of an individual's true abilities. This approach helps in understanding the Law of Luck, which emphasizes the role of chance in determining outcomes.
Consilience, or the unity of knowledge, is another concept that relates to the understanding of statistical phenomena. It emphasizes the importance of integrating different disciplines and perspectives to gain a comprehensive understanding of complex phenomena.