mean deviation
91standard deviation — (in statistics) a measure of the scatter of observations about their arithmetic mean, which is calculated from the square root of the variance of the readings in the series. The arithmetic sum of the amounts by which each observation varies from… …
92axis deviation — alteration in the direction of the mean QRS complex vector, determined from the electrocardiogram; it may be due to alteration in the anatomical position of the heart or to any of a variety of disorders such as ventricular hypertrophy or bundle… …
93standard deviation — Statistics. a measure of dispersion in a frequency distribution, equal to the square root of the mean of the squares of the deviations from the arithmetic mean of the distribution. [1920 25] * * * ▪ statistics in statistics, a measure of… …
94standard deviation — (in statistics) a measure of the scatter of observations about their arithmetic mean, which is calculated from the square root of the variance of the readings in the series. The arithmetic sum of the amounts by which each observation varies from… …
95sample standard deviation — an estimate of the population standard deviation, usually determined (from a sample of size n) by dividing the sum of the squared deviations from the sample mean by n−1 and taking the square root; n−1 is used (rather than n) in order… …
96Standard 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 …
97standard deviation — n. Statistics a measure of variability equal to the square root of the arithmetic average of the squares of the deviations from the mean in a frequency distribution …
98standard deviation — stand′ard devia′tion n. Statistics. sta a measure of dispersion in a frequency distribution, equal to the square root of the mean of the squares of the deviations from the arithmetic mean of the distribution …
99standard deviation — /stændəd diviˈeɪʃən/ (say standuhd deevee ayshuhn) noun the square root of the average of the squares of a set of deviations about an arithmetic mean; the root mean square of the deviations of a set of values …
100standard 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 …
