http://www.bing.com:80/search?q=Mean+of+a+Discrete+Random+Variable+Problem+PDFSearch resultshttp://www.bing.com:80/s/a/rsslogo.gifhttp://www.bing.com:80/search?q=Mean+of+a+Discrete+Random+Variable+Problem+PDFCopyright © 2026 Microsoft. All rights reserved. These XML results may not be used, reproduced or transmitted in any manner or for any purpose other than rendering Bing results within an RSS aggregator for your personal, non-commercial use. Any other use of these results requires express written permission from Microsoft Corporation. By accessing this web page or using these results in any manner whatsoever, you agree to be bound by the foregoing restrictions.https://www.zhihu.com/question/44117231知乎 - 有问题，就会有答案Sat, 11 Apr 2026 15:58:00 GMThttps://www.zhihu.com/question/592510917mean这个词有许多用法和含义，在不同的情境下有不同的解释和表达方式。 以下是一些常见的用法： 1. 表示某物或某人的意图、目的或动机。 例如： - What do you mean? 你是什么意思？ - I mean to say that it's not fair. 我的意思是说这不公平。 - What does it mean when he says that?Sat, 11 Apr 2026 04:09:00 GMThttps://stats.stackexchange.com/questions/23117/which-mean-to-use-and-whenSo we have arithmetic mean (AM), geometric mean (GM) and harmonic mean (HM). Their mathematical formulation is also well known along with their associated stereotypical examples (e.g., Harmonic mea...Sun, 05 Apr 2026 19:32:00 GMThttps://stats.stackexchange.com/questions/239379/what-is-the-difference-between-mean-squared-deviation-and-varianceI also guess that some people prefer using mean squared deviation as a name for variance because it is more descriptive -- you instantly know from the name what someone is talking about, while for understanding what variance is you need to know at least elementary statistics. Check the following threads to learn more:Sun, 05 Apr 2026 12:37:00 GMThttps://stats.stackexchange.com/questions/242787/how-to-interpret-root-mean-squared-error-rmse-vs-standard-deviationLet's say I have a model that gives me projected values. I calculate RMSE of those values. And then the standard deviation of the actual values. Does it make any sense to compare those two val...Fri, 10 Apr 2026 19:55:00 GMThttps://stats.stackexchange.com/questions/319637/how-to-read-scientific-notation-output-numbers-that-include-eWhat does the notation like 8.6e-28 mean? What is the 'e' for? (2 answers) Closed 8 years ago. After running the lm regression model using R, sometime one is bound to get very small P values or values in the covariance matrix. Something of the sort: -1.861246e-04 for example in a covariance matrix.Sat, 11 Apr 2026 09:03:00 GMThttps://stats.stackexchange.com/questions/148868/difference-in-means-vs-mean-differenceWhen studying two independent samples means, we are told we are looking at the "difference of two means". This means we take the mean from population 1 ($\\bar y_1$) and subtract from it the mean fromTue, 07 Apr 2026 05:54:00 GMThttps://stats.stackexchange.com/questions/1063/why-are-mean-0-and-standard-deviation-1-distributions-always-usedThe mean of 0 and standard deviation of 1 usually applies to the standard normal distribution, often called the bell curve. The most likely value is the mean and it falls off as you get farther away.Thu, 09 Apr 2026 20:54:00 GMThttps://www.zhihu.com/question/20406488词典里翻译成的“小气，吝啬”只是mean的一小部分意思。 Mean在口语中更多的是“毒舌，刻薄，过分，坏”的意思。 -Cady: You're the one who made me like this so you could use me for your 8th grade revenge! -Cady: 是你把我变成这个样子的，然后你好利用我来为你8年级的事情复仇。Fri, 03 Apr 2026 21:08:00 GMThttps://stats.stackexchange.com/questions/206081/what-is-implied-by-standard-deviation-being-much-larger-than-the-meanWhat does it imply for standard deviation being more than twice the mean? Our data is timing data from event durations and so strictly positive. (Sometimes very small negatives show up due to clockTue, 07 Apr 2026 01:15:00 GMT