explain what“1 standard deviation above the average score"means。能用英语回答就更好了, 相关知识点: 试题来源: 解析 "1 standard deviation above the average score" means that the observation value minus the population mean just equals to 1 standard deviation.The average score is the population ...
z-score=0表示恰好处于总体正态分布的中央位置，数值恰好等于数学期望。z-score=1就表示你问的“1 standard deviation above the average score”了...相当于“计算对象比数学期望高出一个标准差”的意思。其实你把算z-score的公式中standard deviation乘到z-score一边，就能看出来了是不、...
Standard Deviation Versus Average Deviation Standard deviation is often used to measure the volatility of returns from investment funds or strategies because it can help measurevolatility. Higher volatility is generally associated with a higher risk of losses, so investors want to see higher returns fro...
On the other hand, aggressivegrowth fundsoften have a high standard deviation from relative stock indices. This is because their portfolio managers make aggressive bets to generate higher-than-average returns. This higher standard deviation correlates with the level of risk investors can expect from t...
'Average, Deviation, and Standard Deviation In experimental chemistry we generally determine the value of a measured quantity by repeated measurement. We assume that any errors in our measurements are random, meaning that it is equally likely that our measured results will be higher or lower than...
2.985, and the average standard deviation ( ) is 0.629. minitab.com 平均值 ()为 2.985,而平均标准差 ()为 0.629。 minitab.com Average and Standard Deviation statuspro.com 平均值,标准偏差 statuspro.cn [...] Company name, lot and weigh progressive numbers, gross weight, tare, net...
The meaning of STANDARD DEVIATION is a measure of the dispersion of a frequency distribution that is the square root of the arithmetic mean of the squares of the deviation of each of the class frequencies from the arithmetic mean of the frequency distrib
Standard deviation measures _. A. the average value of a data set B. the spread or dispersion of a data set C. the middle value of a data set D. the number of values in a data set 相关知识点: 试题来源: 解析 B。解析:标准差衡量数据集的分散程度或离散程度。选项 A,是均值的作用。
The meaning of STANDARD DEVIATION is a measure of the dispersion of a frequency distribution that is the square root of the arithmetic mean of the squares of the deviation of each of the class frequencies from the arithmetic mean of the frequency distrib
Based on MSCI All Country World Index data, since 1995, the tech sector has delivered the strongest performance of any sector, though at the cost of higher volatility (standard deviation of returns). Underpinning this outperformance, tech sector earnings have posted the best median earnings per ...