- standard deviation in population
- 总体标准偏差
English-Chinese computer dictionary (英汉计算机词汇大词典). 2013.
standard deviation in population
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Standard deviation — In probability and statistics, the standard deviation is a measure of the dispersion of a collection of values. It can apply to a probability distribution, a random variable, a population or a data set. The standard deviation is usually denoted… … Wikipedia
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 … Auditor's dictionary
population standard deviation — standard d … Medical dictionary
standard 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… … Medical dictionary
standard deviation — A statistical measure of variability in a population of individuals or in a set of data … Glossary of Biotechnology
Unbiased estimation of standard deviation — In statistics, the standard deviation is often estimated from a random sample drawn from the population. The most common measure used is the sample standard deviation , which is defined by:s = sqrt{frac{1}{n 1} sum {i=1}^n (x i… … Wikipedia
Geometric standard deviation — In probability theory and statistics, the geometric standard deviation describes how spread out are a set of numbers whose preferred average is the geometric mean. If the geometric mean of a set of numbers { A 1, A 2, ..., A n } is denoted as μ g … Wikipedia
Pooled standard deviation — In statistics, pooled standard deviation is a way to find an estimate of the population standard deviation given several different samples taken in different circumstances where the mean may vary between samples but the true standard deviation… … Wikipedia
sample 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… … Medical dictionary
Deviation — may refer to: Deviation (statistics), the difference between the value of an observation and the mean of the population in mathematics and statistics Standard deviation, which is based on the square of the difference Absolute deviation, where the … Wikipedia
Standard error (statistics) — For a value that is sampled with an unbiased normally distributed error, the above depicts the proportion of samples that would fall between 0, 1, 2, and 3 standard deviations above and below the actual value. The standard error is the standard… … Wikipedia
