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Statistics版 - how to determine data fit some distribution? thanks
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进入Statistics版参与讨论
1 (共1页)
a****t
发帖数: 720
1
i only know little about statistics.
we have a conjecture in number theory(some kind of property follow some distribution) hard to prove,
then i did a computer experiment to test it. and got lot of data (around 10^4).
from the graph(normalized data), there are several distributions(include our target
distribution) fit that graph pretty good. so how can i analysis those data, to say our
target one is the true one? thanks
l*******l
发帖数: 204
2
Kolmogorov-Smirnov Test.
However statistical test do NOT prove that the distribution fits. All it can
do is to prove that the distribution does NOT fit.
S***e
发帖数: 108
3
Residual plots?
Compare AIC or BIC?
p****o
发帖数: 1340
4
a straightforward and useful way is to use qq-plot.

distribution) hard to prove,
10^4).
our target
data, to say our

【在 a****t 的大作中提到】
: i only know little about statistics.
: we have a conjecture in number theory(some kind of property follow some distribution) hard to prove,
: then i did a computer experiment to test it. and got lot of data (around 10^4).
: from the graph(normalized data), there are several distributions(include our target
: distribution) fit that graph pretty good. so how can i analysis those data, to say our
: target one is the true one? thanks

y**t
发帖数: 205
5
If you cannot find a good test to check which distribution is better, you
can either compare CDF or moments.
Derive your theory CDF/moments then compare with empirical CDF/moments.

distribution) hard to prove,
10^4).
our target
data, to say our

【在 a****t 的大作中提到】
: i only know little about statistics.
: we have a conjecture in number theory(some kind of property follow some distribution) hard to prove,
: then i did a computer experiment to test it. and got lot of data (around 10^4).
: from the graph(normalized data), there are several distributions(include our target
: distribution) fit that graph pretty good. so how can i analysis those data, to say our
: target one is the true one? thanks

1 (共1页)
进入Statistics版参与讨论
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ordinary linear regression assume数据是Normal distribution么?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?
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A question on Binomial Distribution想要描述不同种类的random variables之间的correlation有可能吗?
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Kolmogorov-Smirnov test for discrete distributions一道概率题
how to estimate distance between two distributions? Thanks知道random process (X+Y) 和 X 的distribution, 如何得到 Y? (转载)
相关话题的讨论汇总
话题: data话题: fit话题: some话题: prove