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Inferential statistics cannot separate variability due to treatment from variability due to experimental units when there is only one measurement per unit. Sacrificial pseudoreplication (Figure 5b in Hurlbert 1984) occurs when means within a treatment are used in an analysis, and these means are tested over the within unit variance.
In engineering, science, and statistics, replication is the process of repeating a study or experiment under the same or similar conditions. It is a crucial step to test the original claim and confirm or reject the accuracy of results as well as for identifying and correcting the flaws in the original experiment. [1]
Also confidence coefficient. A number indicating the probability that the confidence interval (range) captures the true population mean. For example, a confidence interval with a 95% confidence level has a 95% chance of capturing the population mean. Technically, this means that, if the experiment were repeated many times, 95% of the CIs computed at this level would contain the true population ...
Pseudoreplication; PSPP (free software) Psychological statistics; Psychometrics; Pythagorean expectation; Q. ... Statistical deviance – see deviance (statistics)
Let a be the value of our statistic as calculated from the full sample; let a i (i = 1,...,n) be the corresponding statistics calculated for the half-samples. (n is the number of half-samples.) Then our estimate for the sampling variance of the statistic is the average of (a i − a) 2. This is (at least in the ideal case) an unbiased estimate ...
The CIA has sent the White House an unclassified email listing all new hires that have been with the agency for two years or less in an effort to comply with an executive order to downsize the ...
From January 2008 to December 2012, if you bought shares in companies when Thomas H. Patrick joined the board, and sold them when he left, you would have a -8.1 percent return on your investment, compared to a -2.8 percent return from the S&P 500.
Health Risks of Unsafe, Unapproved Enhancement Pills. Unscrupulous business practices are so commonplace in the non-prescription male enhancement pill racket that the FDA actually maintains a list ...