Talk:Accuracy and precision
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| − | * Just to get my own statistical knowledge straight: Is '''precision''' quantified by the ''variance'' or the ''standard deviation'' while '''accuracy''' can be measured as the ''standard error of the mean''? <br> <u> Estimators | + | * Just to get my own statistical knowledge straight: Is '''precision''' quantified by the ''variance'' or the ''standard deviation'' while '''accuracy''' can be measured as the ''standard error of the mean''? <br> <u> Estimators </u>as i recall them - just for some TeX training:<br> Variance <math> s^2 = \sum_{i=1}^n (x_i-\bar{x})^2/(n-1)</math> <br> Standard deviation <math> s= \sqrt{s^2} </math> <br> Standard error of the mean (for large populations) <math> \hat{s} = \sqrt{s^2/n} </math><br> Help me out here! [[User:Lburgr|- Levent]] 12:08, 14 January 2011 (CET) |
Revision as of 12:24, 14 January 2011
One statistical question
- Just to get my own statistical knowledge straight: Is precision quantified by the variance or the standard deviation while accuracy can be measured as the standard error of the mean?
Estimators as i recall them - just for some TeX training:
Variance \( s^2 = \sum_{i=1}^n (x_i-\bar{x})^2/(n-1)\)
Standard deviation \( s= \sqrt{s^2} \)
Standard error of the mean (for large populations) \( \hat{s} = \sqrt{s^2/n} \)
Help me out here! - Levent 12:08, 14 January 2011 (CET)
