# mean+standard

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**standard score**— noun Date: 1921 an individual test score expressed as the deviation from the mean score of the group in units of standard deviation …82

**standard error**— Statistics. the standard deviation of a distribution of a sample statistic, esp. when the mean is used as the statistic. [1895 1900] * * * …83

**standard score**— Statistics. the test score of a participant expressed as the deviation of the score from the mean score of the sample in units of standard deviation. [1925 30] * * * …84

**standard error**— noun A measure of how spread out data values are around the mean, defined as the square root of the variance. Syn: standard deviation …85

**standard deviation**— noun A measure of how spread out data values are around the mean, defined as the square root of the variance. Syn: standard error …86

**standard error**— (of a mean) the extent to which the means of several different samples would vary if they were taken repeatedly from the same population. Differences between means are said to have statistical significance when they are greater than twice the… …87

**standard normal distribution**— the normal distribution with mean 0 and standard deviation 1 …88

**standard**— Synonyms and related words: Christian, Dannebrog, Jolly Roger, Old Glory, Procrustean law, Samson post, Star Spangled Banner, Stars and Stripes, Ten Commandments, Union Flag, Union Jack, Zeitgeist, accepted, accustomed, acid test, alike, amount,… …89

**Standard deviation**— A statistic used in *probability distribution models. In a *normal distribution of a *population of random items, the standard deviation represents the typical distance of an item from the population’s *mean value …90

**standard atmosphere**— /stændəd ˈætməsfɪə/ (say standuhd atmuhsfear) noun 1. Physics any hypothetical atmosphere the physical properties of which are given arbitrary values approximating to mean conditions, for such purposes as comparing the performance of aircraft,… …