由买买提看人间百态

boards

本页内容为未名空间相应帖子的节选和存档,一周内的贴子最多显示50字,超过一周显示500字 访问原贴
Statistics版 - HELP needed!! Thank you!!
相关主题
joint distribution[合集] 问个概率题
请教:怎么能把Logistic regression的OR转化成probablity有关conditional probability的问题
急问,在线等:SAS adv certification Question about SELECT v.s IF/THEN ELSE请教一个基础统计问题
根据一个已知的数据集,估算这个数据的probability distribution 一般用那些方法?In which situation, SELECT is more efficient than IF/THEN
model sample size重要吗?Q about Kurtosis distribution
transform to gaussian?[合集] 请问一个问题, two random variables x and y (do not know dis
问一下这个双变量变换的问题 谢谢what is the distribution of a CDF of a random variable which has standard normal distribution?
a regression model test issue一个统计问题
相关话题的讨论汇总
话题: needed话题: intuition话题: variable
进入Statistics版参与讨论
1 (共1页)
x**********t
发帖数: 45
1
I have a random variable X. Y=X with probability 0.5 and Y=-X with
probability 0.5. How to get the distribution of Y?
Thank you very much!!
s*****b
发帖数: 106
2
By intuition, if X has p.d.f. f(x)
then Y has p.d.f. g(x)=1/2[f(x)+f(-x)].

【在 x**********t 的大作中提到】
: I have a random variable X. Y=X with probability 0.5 and Y=-X with
: probability 0.5. How to get the distribution of Y?
: Thank you very much!!

d*******y
发帖数: 1154
3
If X is symmetrically distributed (like normal distribution)
Then Y follows the same distribution as X

【在 x**********t 的大作中提到】
: I have a random variable X. Y=X with probability 0.5 and Y=-X with
: probability 0.5. How to get the distribution of Y?
: Thank you very much!!

1 (共1页)
进入Statistics版参与讨论
相关主题
一个统计问题model sample size重要吗?
这里有谁知道R里PROBABILITY DISTRIBUTION FUNCTION的C源程序transform to gaussian?
请教有rician噪声的probability distribution问一下这个双变量变换的问题 谢谢
在家呆了十二年的妈妈想读统计系MS,有多难(请多指点)?a regression model test issue
joint distribution[合集] 问个概率题
请教:怎么能把Logistic regression的OR转化成probablity有关conditional probability的问题
急问,在线等:SAS adv certification Question about SELECT v.s IF/THEN ELSE请教一个基础统计问题
根据一个已知的数据集,估算这个数据的probability distribution 一般用那些方法?In which situation, SELECT is more efficient than IF/THEN
相关话题的讨论汇总
话题: needed话题: intuition话题: variable