Examlex
Identify the element that has an atomic number of 20.
Extrasensory Perception
A claimed ability to gain information through means other than the known human senses, including telepathy and clairvoyance.
Random Trial
A type of experiment where outcomes are determined entirely by chance, eliminating any bias from the experimenters.
Confidence Interval
An interval of values, calculated from statistics of a sample, which probably encloses an unidentified population parameter.
Standard Error
An estimate of the variability or precision of a sample mean (or other estimate) as an estimate of the population mean.
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