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 ...
A.1.5 B.2 C.-2 D.-1.5 查看答案
The quality or condition of being unlike or dissimilar. Deviation The amount by which a single measurement differs from a fixed value such as the mean A significant deviation from the average value Difference An instance of disparity or unlikeness There is a big difference in sound between a cl...
arithmetic mean (average) 21、 算术平均值1 nE=å ain i =12. median 中位数* The median is the middle value of a list when the numbers are in order.* 先排序,后取中。3. mode 众数* The mode of a list of numbers is the nmuber that occurs most frequently in the list.* A list ...
Math Statistics and Probability Standard score What are always the mean and standard deviation of the z-distribution?Question:What are always the mean and standard deviation of the z-distribution?The z-distributionIt is known that if a normal distribution is represented in terms of the ...
Z-score = (Observation - Mean) / Standard Deviation The Altman Z-score, developed in the late 1960s, modifies basic Z-scores to illustrate how financially healthy a business might be and to try to quantify its creditworthiness. The model is named after professor Edward Altman, who developed ...
If the mean is 40 and the standard deviation is 7, what is the z-score of the number 50? 相关知识点: 试题来源: 解析 The -score must be between 1 and 2\ (since)\ 40+7=47 would have a z-score of 1 while 40+2⋅ 7=54 would have a -score of 2. Use the formula: = (...
With a maximum score of 528, what is a good MCAT score? While “good” is subjective, it really does depend on your goals and what kind of medical school you are trying to attend. Typically, a good score is about one standard deviation or so above the average. ...
What do you mean by IQ? An IQ score above 140 Indicates genius or nearly genius. An IQ (intelligence quotient) test is a standardized method to know the mental ability of a person, usually against a peer group. IQ scores between 90 and 109 indicate normal or average intelligence. IQ rema...
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 ...