Recent content by DrunkenPhD

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    Is this function x/sinx continuous?

    Wolfram says NO :) http://www.wolframalpha.com/input/?i=Is+f%28x%29%3Dx%2Fsinx+continuous+over+the+reals%3F
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    Is this function x/sinx continuous?

    Can we judge about continuity of function x/sinx?? Many examples in Google about sinx/x or xsinx but nothing about this function? Is there any special case? Regards
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    Can Hypothesis Testing for Proportions Simplify Design Variable Levels?

    So I decided to study in details GLM. Seems very interesting and with lot of applications. Can you please suggest any prerequisites or further readings for this?
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    Can Hypothesis Testing for Proportions Simplify Design Variable Levels?

    Ok I am reading this article http://www.fc.up.pt/dmat/engmat/2012/seminario/artigos2012/Luis_Ferreira/Using%20logistic%20regression%20to%20estimate%20the%20influence%20of%20accident.pdf and looking at page 734 I am trying to understand how we perform proportion test and get confidence...
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    Can Hypothesis Testing for Proportions Simplify Design Variable Levels?

    I read that I can use the hypothesis testing technique for proportions to decide whether the number of levels for a design variable could be reduced. In literature the following typical test was used: Ho: pi=0 Ha: pi \neq0 where pi is the proportion of class i (level i ) within the...
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    Is the Inequality with Absolute Values |x+y| ≤ |x| + |y| True?

    Wonder if this is true or just mistype: |x+y| \leq |x| +|y| If this is true how to proof because cannot find it out anywhere written Regards
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    Normal distribution negative values

    Thank you SteamKing. But in case of not standard normal distribution smth like N(μ,σ) where both μ,σ are not equal to 0, I cannot really see smthg like -5 minutes which can be a value of simulation N(μ,σ) Any ideas about that? Regards
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    Normal distribution negative values

    Hi I read at this link http://www.eecs.berkeley.edu/~aude/papers/TRB2012_stat_traffic.pdf something like bus travel times can be normally distributed. Sounds strange to me because normal distribution presumes even negative values Anything I am missing here? Regards
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    Become a Statistician: Get Advice from Experts in the Field

    Just finished my math studies. I have been studying mostly statistics and have some experience in R language. Need advice from experts working in field for further steps to make a career . Which are most preferred fields of applied statistics and what I should study next? Thx
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    Best book on mathematical statistics

    Hi Please advice me a good book on mathematical statistics.I want it to be oriented in math students or engineering level. Best Regards
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