英文:The standard deviation of the test scores is very large, indicating that the students' scores vary greatly. 例句2:中文:在质量控制中,我们需要计算产品的标准差,以确保生产的一致性。英文:In quality control, we need to calculate the standard deviation of the products...
Definition Standard Scores are raw scores that, for ease of interpretation, are converted to a common scale of measurement, or z distribution, with a mean or average value of 0 and a standard deviation of 1. When sample sizes, or Ns, are small, say less than 200, standard scores are ...
Z-scores are expressed in terms of standard deviations from their means. Resultantly, these z-scores have a distribution with a mean of 0 and a standard deviation of 1. The formula for calculating the standard score is given below:As the formula shows, the standard score is simply the ...
R语言中每个数值运算函数都有na.rm选项,以便在计算前删除缺失值。否则,缺少值的存在将导致结果也是缺失值。统计函数的运算的对象可以是向量也可以是dataframe 编辑 R语言使用sd函数计算数据列或者向量标准差(standard deviation) x <- c(4, 5, 1, 8, 9, 4) ...
Define standard deviation. standard deviation synonyms, standard deviation pronunciation, standard deviation translation, English dictionary definition of standard deviation. n. Abbr. SD A statistic used as a measure of the dispersion or variation in a d
standard deviation (redirected fromStandard deviations) Dictionary Medical Financial Encyclopedia Related to Standard deviations:variance,standard error Graphic Thesaurus🔍 DisplayON AnimationON Legend Synonym Antonym Related </>embed</> variance statistics ...
Now that we have the key information (that is, the mean score, µ, the standard deviation, s , and z-score, z), we can answer our question directly, namely: What mark would a student have to achieve to be in the top 10% of the class and qualify for the advanced English Literatu...
Transforming thestandard scoresto T-Scores having a mean of 50, a standard deviation of 10, and a range of 0 to 100 (except in unusual circumstances).— WSJ, 5 Dec. 2017 These firms collect data on cyberattacks and try to createstandard scoringsystems to indicate the likelihood that a co...
Standard deviation and the Z-score are two such fundamentals. Z-scores can help traders gauge the volatility of securities. The score shows how far away from the mean—either above or below—a value is situated. Standard deviation is a statistical measure that shows how elements are dispersed ...
关于标准偏差的问题(英文)about what proportion of the scores are within two standard deviations of the mean?这句话是什么意思呀? 答案 这是道数学问题意思是说分数或比数中大概有多少部分是在平均值(MEAN)的标差值(STANDARD DEVIATION)的范围内?因为我以前做的也是英文的中文的翻译可能有点没那么标准.相关推...