The standard error is an estimate of how much the value of a test statistic varies from sample to sample. It is a measure of the uncertainty of the test statistic. Standard error might be abbreviated as std. error.
If some test statistic is computed separately for each form of the test, the value obtained will (ignoring practice effect, fatigue, etc.) differ from form to form because of sampling fluctuations. The standard deviation of the values obtained represents, approximately, the standard error of the...
This leads to a wide confidence interval for that sample statistic. If the standard error is small, then any given sample statistic can’t be very far from the population parameter (narrow confidence interval). To summarize: the bigger your sample, the smaller your standard error, and the ...
表格中给出的t-statistic=4.280是默认B1=0时的结果。再代入表格中的b1 cap=1.0264，即可反求stand ...
Standard Error Standard error (SE) of estimate is a statistic of the stability and reliability of data and is similar to standard deviation (SD). Standard error is used to estimate the standard deviation of the sampling distribution. If the standard error is high then the dataset is considered...
(2) test whether the transformed parameter differs from 1 in the OR space (H0: exp(b) = 1). The latter test would use the SE(ORb) from the delta rule. When reporting ORs, HRs, or RRRs, Stata reports the statistic and significance level from the test in the natural estimation space...
[1]. A test statistic is a numerical summary of data that is used to assess some hypothesis. One of the most commonly used summaries of the data is a mean. But there are others, for example, the variance, the maximum, or the median. Standard error is denoted SE, and sometimes ...
Standard error andstandard deviationare both measures ofvariability: Thestandard deviationdescribes variabilitywithin a single sample. Thestandard errorestimates the variabilityacross multiple samplesof a population. The standard deviation is adescriptive statisticthat can be calculated from sample data. In co...
So, for the employee test scores, the standard deviation is 8.7. This is low variance, indicating that all employees performed at a similar level. 4. What is standard error? Standard error (or standard error of the mean) is an inferential statistic that tells you, in simple terms,how accu...
standard error Also found in:Thesaurus,Medical,Legal,Financial,Acronyms,Encyclopedia,Wikipedia. Related to standard error:variance standard error n. A generalized notion of standard deviation, used to characterize the dispersion of a statistic (such as the sample mean) calculated from randomly sampled ...