Standard deviation is a statistical measure that shows how spread out data values are from the mean, indicating variation or dispersion in a dataset.
which is divided by 2 to arrive at the total variance of 0.13%. Then, he takes the square root of the total variance, or .0013,. which equals a deviation of 3.6%. Although this formula can seem intimidating, it is actually an extremely useful tool for investors and non-investors to us...
the standard deviation is small. When the examples are spread apart and the bell curve is relatively flat, that tells you you have a relatively large
Understanding standard deviation helps businesses make informed decisions by providing insights into the variability and consistency of data. It is a fundamental statistical tool that aids in risk assessment, quality control, and performance evaluation. ...
A standard deviation is an assessment of how spread apart or contracted into each other a statistical population (or a sample) is. When the standard...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your tough...
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 ...
1. What is the difference between descriptive and inferential statistics? The first main difference between standard deviation and standard error is thatstandard deviation is a descriptive statisticwhilestandard error is an inferential statistic. So what’s the difference?
Standard deviation tells you if the estimate is accurate C. Standard deviation tells you how unsure the estimate is D. Standard deviation tells you if the E. stimate includes a pad 相关知识点: 试题来源: 解析 C 标准差和风险有何关系? A. 没有关系 B. 标准差告诉你估算是否准确 C. 标准差...
Standard Deviation of Returns:Risky assets provide returns that are random in nature. The overall riskiness of an asset is sometimes measured by the standard deviation of the asset returns, which is the square root of the variance of returns....
or average. The larger the variance/standard deviation, the more widely those points are spread out. Investors use both metrics to measure the risks of investments: A low variance means that an investment is likely to behave as predicted, while a large variance means less certainty in the poss...