Tagged Questions
2
votes
1answer
20 views
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 ...
0
votes
0answers
75 views
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 ...
5
votes
1answer
88 views
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) = ...
1
vote
1answer
207 views
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 ...
4
votes
1answer
369 views
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 ...
4
votes
3answers
1k views
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 ...
5
votes
0answers
72 views
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 + ...
5
votes
2answers
78 views
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 ...
4
votes
3answers
110 views
Flipping test and control groups
Let's say you're running an A/B test on a website. Let's also say the standard methodology of randomly displaying one version or the other is unusable due to SEO hand-waving. The particular page ...
8
votes
2answers
528 views
How to calculate sample size for simulation in order to assert some level of goodness in my results?
I am a stats newbie, so apologies in advance if I'm asking a braindead question. I have searched for answers to my question, but I find that many of the topics are either too specific, or quickly go ...
