# Tagged Questions

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### Statistical representation of results of experiement

I hope that I'm asking this question at the right place. I need some advices on showing my results for an experiment. My Case Study: I have an information retrieval process that takes a query and ...
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### Prepare a sampling plan using probability sampling techniques

Yesterday I have done my MBA exam, I have faced a question in Probability, I will put the questions please answer anyone knows? A research agency is planning to conduct a survey regarding ...
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### How to determine the sample size of a Latin Hypercube sampling?

I am designing an experiment with 5 variables. Some of the variables have 2 and others have 3 levels. The method that I am going to use is the Latin Hypercube, but I do not not what the sample size ...
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### Alternative sampling method instead of fractional factorial design

I am trying to do my design of experiment for numerical simulations. Here, i have (eg.) 10 parameters which can be 0 or 1 ...
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### Optimal sampling to estimate a quadratic function

Suppose I have a quadratic function: $$f(x) = a^T x + x^TBx$$ with $x \in \mathbb{R}^n$. Given a point $x$ I can measure $f(x)$ up to some noise, that is I can get a measurement:  \hat{f}(x) = ...
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### Philosophy of sampling for experiments: finite versus infinite

What is the difference between a finite population and an infinite one - when you are designing an experiment (sample/power and interpretation of the results)? Say a company has a database of 20,000 ...
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### Minimum sample size to achieve a specific confidence level and interval

I am building software components that are going to be used by multiple users simultaneously. At the current point in time, these components are known bad. That is, if I simulate multiple users ...
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### How to check whether a sample is representative across two dimensions simultaneously?

I'm attempting to develop a standardized method to check whether one set of locations are representative of a larger set. In this particular case, I'm attempting to look specifically at their ...
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### Find the minimum of an expensive-to-sample noisy paraboloid

I have a function on the unit square that's expensive to evaluate, and want to estimate where it reaches its minimum in at most $N$ evaluations, $N$ ~ 10 say. Assuming a model of the form paraboloid + ...
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### Is it a problem that the sizes of randomized groups can differ?

My website has advertising for various companies - say 10,000 companies. Each company has it's own page but all the pages are currently similar except by which company is on the page. A ...