How Can I show this using caucy inequality?

To better see This question you can See here: https://stats.stackexchange.com/questions/321445/how-do-i-show-this-using-the-cauchy-schwarz-inequality I asked it there. there is a good answer there...

01 February 2018 5,992 1 View

Why using leave out idea in problems?

I'm not sure why sometimes in problems leave out version of estimators uses. for example when we want standard the data instead of dividing numbers on whole of the sample's standard deviation,...

01 February 2018 4,471 4 View

How to simulate high dimensional tests like articles.

I have studying two sample tests on high dimensional datasets. I have a problem with simulating this test with changing \eta like what is in Feng and Sun article page 33 linked below.Any help will...

05 June 2017 6,073 0 View

What is the conceptual difference between truncated and censored data?

01 February 2017 6,307 0 View

Any source for Behrens-Fisher setting Definition?

Hi!I should Say I know what Behrens-Fisher Setting is, But I need a source (book, article or etc.) that contains a definition of Behrens-Fisher setting to make a reference to it in my thesis.any...

10 November 2016 8,213 1 View

Obtain lasso regression coeficient based LS when X'X = I

I need to obtain coefficients of lasso regression based in coefficients of Least Square regression method when $X'X = I $. any help will be appreciated.

03 April 2016 1,984 1 View

How this high dimensional test statistic has been obtained?

Hi! I was reading this article of Feng and Sun. But I was wondering How the statistic has been obtained! any Idea?thanks.

01 February 2016 3,696 0 View

Is there any faster algorithm for Gassian blur?

02 March 2015 9,972 6 View

What is the Best Database Structure for Big Data?

02 March 2015 8,110 9 View

Sampling in twitter

I want to do a research just for fun! I need to sampling in twitter! What I need is a method to do find random account in twitter with equal chance of selection. Has anyone any suggestion to doing...

08 September 2014 1,066 2 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

What kind of fluid could I use for a pitfall trap that also does not invalidate molecular testing?

Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...

03 March 2021 5,978 5 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

Would fecal samples stored at -20C for over a year impact metagenomic analysis?

Dear All, I have access to some rodent fecal samples that have been stored at -20C instead of -80C. Anyone have experience with the impact of stowage condition on comparative metagenomic analysis...

01 March 2021 2,512 1 View

Does different dilution factors affect negatively on NH3 reading ?

I have a sample of treated water sample & asked to obtain ammonia conc. in sample using a machine with 5-25 ppm detection range. However, upon testing with different dilution factors, all...

27 February 2021 8,483 3 View

VIF very high, but correlation is low and coefficient is significant. Which one whould I choose?

Hello. I have a question whether if my coefficients (statistically significant) would be valid when VIFs are really high. In my model, there are independent variables(IV), moderating variables...

26 February 2021 956 13 View

How to compare 2 samples recruited with different sampling methods?

If I want to compare characteristics of 2 groups of patients, one group is recruited from a random sample of the general public while another group is from a sample with a fixed gender (male to...

26 February 2021 3,526 3 View

Can random sampling have inclusion criteria?

As random sampling means that everyone in the population have an equal chance to be chosen, can it have inclusion criteria? My research participants have been chosen based on the inclusion...

26 February 2021 6,905 10 View

Data Analysis K-S and S-W tests?

Hello, I have conducted analysis where the K-W and S-W have come out as p

25 February 2021 9,648 3 View

Statistics: include groups of respondents made by one person for analysis?

Good morning, I could not find literature about this so I am asking. I am organizing data for a questionnaire (N=100) that foresees some personal questions like level of education. For the aim...

25 February 2021 2,090 4 View