Relationship Between the Precision of Estimated Sampling Variances and the Number of Samples
- VernacularTitle:取样方差估计值的精度与样本数目之间的关系
- Author:
Zhi GAO
;
Yijun LI
;
Xiwen HE
;
Shoutian ZHU
- Publication Type:Journal Article
- From:
Chinese Journal of Analytical Chemistry
2001;29(2):171-174
- CountryChina
- Language:Chinese
-
Abstract:
The relationship between the precision of the estimated sampling variances and the number of samples was quantitatively established. It revealed that the product of the standard deviation of the estimated samplingvariance and square root of the number of samples was a constant. Monte Carlo simulation technique was employed to verify the equation. Populations with Gaussian,unifohn random and multi-nomial(taking silicon carbide material as an example) distributions were studied with satisfactory results.
