All Questions

9 views

Statistically comparing results from two methods

I am not exactly sure if CrossValidated is the place to ask this question, but decided to give it a shot. This may be thought as an abstract question. I am trying to compare the feasibility of two ...
24 views

When data has a gaussian distribution, how many samples will characterise it?

Gaussian data distributed in a single dimension requires two parameters to characterise it (mean, variance), and rumour has it that around 30 randomly-selected samples is usually sufficient to ...
29 views

How does adding a “lives” mechanic change average picks?

I'm tuning a slot machine app and need to make sure the mini-game is appropriately balanced. The mini-game is a grid of 30 treasure chests, 6 of which are traps. The user continues to open chests ...
20 views

Probability over 50-day ranges to predict results on one day

The title is a bit complex, so I'll just post the question. This is in preparation for a final I'm going to take. Consider the total number of cars that a car dealership might sell over 50 randomly ...
16 views

Zero-mean correlation

In the following blog post: here, the author goes and calculates the alternative correlation measure for two time series. Essentially, calculates the correlation between two series by giving the mean ...
13 views

Select best set of binary variables for clustering known sample labels

I have a set of samples, for which I know the "true groups". For this samples I have about 200 binary variables, I would like to know a method to select the subset of variables, that gives me a ...