Description:
Statistics from a strictly mathematical viewpoint.
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Nadaraya–Watson smooth backfitting estimate
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in recent studying, i found a Nadaraya - Watson smooth backfitting estimate to applicate on additive model. However, i don't realize the definition of this estimation. could someone tell me what is this and how does it applicate on several model? or provide any articles which talk about this definition and... more »
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Quality of card shuffling on online poker sites
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Hi, I play poker online and sometimes I wonder myself if the shuffle is a really randomly done. I can make some demonstration based on opinions like "what would be the interest of a site to make biased shuffling?" but the questioon I ask myself is : would it be possible _to prove_ that the shuffling is good... more »
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Solution Manual needed
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Hi I was wondering if anyone has the solution manual to Calculus with analytic geometry 5th edition by Robert Ellis and Engineering Fund and Problem solving 5 edition by Eide. let me know thank you
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Product of exponential r.v.s
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I am reading the following from a textbook: " X1,...,Xn is iid Weibull with the following distribution function: a/theta x^{a-1 } exp{ -x^a / theta}, x>0 X^a / theta is a pivotal quantity, and is distributed according to an exponential rv with rate 1 Y=Product(i=1 to i=n, Xi^a / theta) also is a pivotal quantity because... more »
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cheap Puma shoes PayPal Dear friend welcome to shopping on [link] 1.5% paypal handling charge supports the online payment! 2.Use your intergla replacement more good gift! 3.notes by email and website of deliver each package at first time. Have a good day! Sincerely yours,... more »
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Pivotal quantity
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I am reading the following in a textbook. X1,..., Xn is (iid) distributed according to a parametric family with parameters a and theta. Both a and theta are unknown. (...an argument I am skipping...) P( Xmin^theta / a^theta <t ) =1-1/t therefore Xmin^theta / a is a pivotal quantity. I am surprised, I would have said: Xmin^theta / a^theta is a pivotal... more »
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Relational DB in R-environment
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Hi, is it possible to "link" with an INNER JOIN two dataframes in R- environment, as in any relational DB? Many statistical environments enable the user to do it (i.e. SAS). Having table A and table B linked with a key ID, I tried to do it by adding new columns to table B with the same name as in A and using a... more »
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Covariance matrix in MCMC method
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Hi, I have a problem and I am really in need of your comments. My problem can be described as follow. INPUT: Many sets of observed temporal data with T elements (T is constant). Each set corresponds to a pair of number of entities and size, denoted by n and s. For example, if n = 50, s = 1000, and T =... more »
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