mean可以用作名词，表示平均值或中间值。例如：The mean of the data set is 10.这组数据的平均值是10。mean还可以表示方式或方法。例如：There are many means of transportation available in the city.城市里有很多种交通方式可供选择。mean作为动词，可以表示意味着、表示。例如：His silence means...
结果1 题目 22 A set of data consists of 5 numbers. The mean of the set of data is 12 and the standard deviation is 1.234. Find(a)the sum of the numbers,(b) the sum of the squares of the numbers. 相关知识点: 试题来源: 解析 (a)60(b) 反馈 收藏 ...
In a data set of test scores, the mean score is 80 and the standard deviation is 10. If a student's score is 90, the probability of getting a score higher than this is ___. A. 成平机北建争有报并记交我之成平机北建争有报并记交我之0.1587成平机北建争有报并记交我之成平机北...
如果way前有this,that等限定词,介词可省略,但如果放在句首,介词则不可省略。way作“方式,方法”解时,其后可接of v -ing或to- v 作定语,也可接定语从句,引导从句的关系代词或关系副词常可省略。 2、mean:means在作“方法,手段”解时是单数名词,可用不定冠词a修饰,当其用作主语时,谓语动词可用单数形式,也...
nesting parentheses occurs when one set appears within another set – it’s sort of like putting one box inside another box within a larger box… you get the idea! this particular action can sometimes get confusing because now instead of just looking at one big block you are dealing with ...
Of course, this set of values is very simple compared to data sets you’re likely to encounter in real life. In cases when there is too much data to look at all at once, there are often special tools (such as those used in spreadsheet software) that you can use to determine the me...
Question 10: A set of data consists of 20 numbers. The mean of the numbers is 8 and the standard deviation is 3.(a)Calculate∑x∂nd∑x^2 and(b) A sum of certain numbers is 72 with mean of 9 and the sum of the squares of these numbers of 800, is taken out from the set ...
The concept of mean reversion is widely used in various financialtime series data, including price, earnings andbook value. When an asset's currentmarket priceis less than its average past price, it's considered attractive for purchase. Conversely, if the current price is above the average, it...
skinny or fat.This is pkely 10 most studies have reported that healthy'obesity is still 11 higher mortapty risk,she says.The study looked at data of 54,089 men and women from five large studies,and 12 them into two groups:those who were obese and had no metabopc risk factors,and ...
We propose a class of estimators for the population mean when there are missing data in the data set. Obtaining the mean square error equations of the proposed estimators, we show the conditions where the proposed estimators are more efficient than the sample mean, ratio-type estimators, and th...