preferred to the more usual standard deviation. Note that unlike the usual arithmetic standard deviation, the geometric standard deviation is a multiplicative... 4 KB (710 words) - 03:07, 9 April 2024 |
Look up standard deviation in Wiktionary, the free dictionary. Standard deviation is a widely used measure of variability or diversity used in statistics... 797 bytes (123 words) - 17:51, 29 March 2022 |
Coefficient of variation (redirect from Relative standard deviation) also known as normalized root-mean-square deviation (NRMSD), percent RMS, and relative standard deviation (RSD), is a standardized measure of dispersion... 30 KB (4,017 words) - 22:41, 26 April 2024 |
unbiased estimation of a standard deviation is the calculation from a statistical sample of an estimated value of the standard deviation (a measure of statistical... 18 KB (2,961 words) - 08:00, 8 August 2023 |
In statistics, the standard score is the number of standard deviations by which the value of a raw score (i.e., an observed value or data point) is above... 15 KB (1,883 words) - 18:22, 9 March 2024 |
statistics, the standard deviation line (or SD line) marks points on a scatter plot that are an equal number of standard deviations away from the average... 2 KB (330 words) - 01:31, 14 May 2023 |
Pooled variance (redirect from Pooled standard deviation) known as a pooled standard deviation (also known as combined standard deviation, composite standard deviation, or overall standard deviation). In statistics... 14 KB (3,138 words) - 06:10, 2 February 2024 |
Weighted arithmetic mean (redirect from Weighted standard deviation) random variable. Its expected value and standard deviation are related to the expected values and standard deviations of the observations, as follows. For... 44 KB (8,991 words) - 12:09, 22 April 2024 |
Casino game (section Standard deviation) 26% = 0.53. As you can see, standard deviation is many times the magnitude of the expected loss. The standard deviation for pai gow poker is the lowest... 12 KB (1,645 words) - 07:00, 16 April 2024 |
Normal distribution (redirect from Standard normal distribution) median and mode), while the parameter σ {\displaystyle \sigma } is its standard deviation. The variance of the distribution is σ 2 {\displaystyle \sigma ^{2}}... 141 KB (22,331 words) - 16:04, 2 May 2024 |
specify both the measure of deviation and the measure of central tendency. The statistical literature has not yet adopted a standard notation, as both the mean... 13 KB (1,665 words) - 17:30, 9 July 2023 |
distribution with mean μ and standard deviation σ, its Z-score may be calculated from X by subtracting μ and dividing by the standard deviation: Z = X − μ σ {\displaystyle... 23 KB (1,291 words) - 15:39, 18 May 2023 |
a set of deviations, such as the standard deviation and the mean absolute deviation, measures of dispersion, and the mean signed deviation, a measure... 15 KB (1,864 words) - 19:58, 2 January 2024 |
a data set than the standard deviation. In the standard deviation, the distances from the mean are squared, so large deviations are weighted more heavily... 8 KB (1,095 words) - 07:29, 25 April 2024 |
Six Sigma (redirect from Six standard deviations) reference to the fraction of a normal curve that lies within six standard deviations of the mean, used to represent a defect rate. Motorola pioneered... 53 KB (6,043 words) - 13:30, 26 September 2023 |
dimension. Deviation (statistics), the difference between the value of an observation and the mean of the population in mathematics and statistics Standard deviation... 2 KB (290 words) - 06:11, 25 October 2023 |
Interquartile range (redirect from Quartile deviation) median of some common distributions are shown below The IQR, mean, and standard deviation of a population P can be used in a simple test of whether or not P... 10 KB (1,140 words) - 19:03, 20 April 2024 |
Distance correlation (redirect from Distance standard deviation) used in its specification, specifically: distance variance, distance standard deviation, and distance covariance. These quantities take the same roles as... 24 KB (3,859 words) - 03:22, 4 February 2024 |
68%, 95%, and 99.7% of the values lie within one, two, and three standard deviations of the mean, respectively. In mathematical notation, these facts... 20 KB (1,601 words) - 02:04, 3 May 2024 |
The root mean square deviation (RMSD) or root mean square error (RMSE) is either one of two closely related and frequently used measures of the differences... 11 KB (1,585 words) - 18:48, 3 May 2024 |
Reduced chi-squared statistic (redirect from Mean Square Weighted Deviation MSWD) mean, then χ ν 2 {\displaystyle \chi _{\nu }^{2}} equals the sample standard deviation. As a general rule, when the variance of the measurement error is... 12 KB (1,863 words) - 15:26, 15 February 2024 |
Reference range (redirect from Standard reference range) population standard deviation are known. They both need to be estimated from a sample, whose size can be designated n. The population standard deviation is estimated... 38 KB (5,296 words) - 21:21, 17 April 2024 |
S&P 500 (redirect from Standard & Poor's 500) dividends—has been approximately 9.8% (6% after inflation), with the standard deviation of the return over the same time period being 20.81%. While the index... 32 KB (1,706 words) - 08:57, 26 April 2024 |
Temperature anomaly (section Standard deviation) divided by the standard deviation. To summarize: choice of reference period determines vertical placement of a trace on a graph, and deviation determines... 8 KB (793 words) - 01:34, 18 November 2023 |
Explained variation (redirect from Residual standard deviation) In statistics, explained variation measures the proportion to which a mathematical model accounts for the variation (dispersion) of a given data set. Often... 6 KB (837 words) - 10:14, 1 May 2024 |
Directional statistics (redirect from Circular standard deviation) {\frac {i\sigma ^{2}}{2\pi }}\right)} where μ and σ are the mean and standard deviation of the unwrapped distribution, respectively and ϑ ( θ , τ ) {\displaystyle... 18 KB (2,677 words) - 22:36, 3 December 2023 |