mean±sd代表平均值加减标准差。其中，“sd”即“standard deviation”，即标准差，反映了数据集的离散程度或波动范围。标准差越大，表明数据离散程度越高，个体间的差异越大。因此，mean±sd用于描述数据集中各个数值与平均值的离散情况，体现数据的稳定性及可靠性。在...
Publications similar to "Mean ± SEM" or "Mean (SD)"? - 1 Use of descriptive statistics is very common in articles published in various medical journals. For the ratio and interval data following the normal distri... M &Plusmn,SEM&rdquo,O &Ldquo,... 被引量: 0发表: 0年 ...
According to the empirical rule, if the data form a bell-shape curve (normal distribution), approximately what percent of the observations will be contained within ± 2 standard deviations from the arithmetic mean? A. 99.7 B. 95.0 C. 6...
According to the 68-95-99.7 rule, what percent of the population are between 1 standard deviation below the mean and 2 standard deviations above the mean? According to the 68-95-99.7 rule, what percent of the population is between 1 stand...
According to the empirical rule, if the data form a bell-shape curve (normal distribution), approximately what percent of the observations will be contained within ± 2 standard deviations from the arithmetic mean? A. 99.7 B. 95.0 C...