【题目】If th e mean and standard deviation of a data set ar e given, which dat a set has a varianc e e qual to 16?( ) A. Mean=4; Standard Deviation=8$$ . M e a n = 2 5 6 $$; Standard Deviation=s C. Mean=4; Standard Deviation= 256$$ D . M e a n = 2 5 ...
If a certain sample of data has a mean of 20 and a standard deviation of 3, which of the following values is more than 2.5 standard deviations from the mean?A. 12.0B. 13.5C. 17.0D. 23.5E. 26.5我根本就一点都不懂方差, 除了公式! 这句话什么意思? 怎么算?谢谢! 相关知识点: 试题...
high BP is related to greater hematoma growth, most of which occurs in the first few hours after onset and is more likely in patients presenting with large hematomas and in the context of using antithrombotic
Standard deviation is a very important statistic. This can give us information about how the values move around the mean. The more the movement away from the mean, the higher is the standard deviation. Answer and Explanation: Learn more about this topic: ...
A list of numbers has a mean of a standard deviation of 2.5.If x is a number in the list that is 2 standard deviations above the mean,what is the value of 这是新GRE官方指南上149页的一道题啊,不好意思,开头是...has a means of 8 and a standard deviation......
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: = (...
Find the co-efficient of variation of a sample which has mean equal to 25 and standard deviation of 5. View Solution Doubtnut is No.1 Study App and Learning App with Instant Video Solutions for NCERT Class 6, Class 7, Class 8, Class 9, Class 10, Class 11 and Class 12, IIT JEE pre...
1问一道统计学问题:英文Suppose a population has a mean of 90 and a standard deviation of 28.If a random sample of size 49 is drawn from the population,the probability of drawing a sample with a mean of more than 95 is ___ .Select one:a.0.3944b.1.0000c.0.8944d.0.4286e.0.1056我总觉得...
This is significantly higher than 8%, which is the probability for the case without considering the uncertainty propagation. Previously, the determination of whether the earthquake was at a coseismic plate boundary was based on the latter type of results, in which the uncertainty in the seismic ...
如果人口的平均数是11，而标准偏差是1.5. 那么找出落在平均值5个偏差以内的值的间隔。用开区间表示法表达出你的答案。