Questions tagged [statistics]

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Penalized logistic ridge regression

This code is for the penalized logistic regression that we should to choose \$\lambda\$ in regularization to control the trade off. I use the first function to estimate the \$\hat{\beta}\$ and the ...
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76 views

Numerical maximization procedure normal distribution

Firstly, I programmed this gaussian density as an R function which takes the parameters mean and variance (mean=4,sd=1) and ...
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3answers
980 views

Calculate median of a matrix

I am solving interview questions from here. Problem : Given a N cross M matrix in which each row is sorted, find the overall median of the matrix. Assume N*M is odd. Note: No extra memory is ...
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1answer
101 views

A simple Python graphing tool

I've written a primitive Python script which "draws graphs" based on a list. It works, but it's a lot of lines for what I am trying to reach. The idea of the script is to function as a module that can ...
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1answer
1k views

Median of two sorted arrays

The task is to find the median of two Arrays. I have an O(n) solution. Can it be written in a better time complexity? ...
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2answers
2k views

Program to find the mean, median, and mode of numbers

I was attempting to build a program using Ruby that asks the user to input at least three numbers, and it returns the mean, median, and mode of those numbers. A developer friend of mine glanced over ...
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1answer
44 views

Calculate the statistical mean of different files and save it into a CSV file

In this code I calculate the statistical functions of values from different files and save them into CSV files (one filer for each statistical function). ...
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1answer
72 views

Generating probability table of 2-character combinations from text file in Java

I have written a probability table generator in Java to help me generate randomized girl's names for the game I am making. It reads from a text file and creates a ...
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3answers
73 views

Top-10 lists of occupations, ranked by various attributes

In the code below, all pairs of functions are very similar: set function rankListId is different rankListName is different ...
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0answers
17 views

Predicting with multiple independent hot-encoded variables

My attempt at multiple linear regression. I am trying to make a qualified guess about a user's rating of a movie, through machine learning. I am new to this, so my judgement isn't the best. And I am ...
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0answers
55 views

Nested cross-validation

This is a homework assignment to implement nested cross validation. It seems to work fine (sometimes). The imports are inside the class and some methods are static, because this code needs to be in ...
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1answer
94 views

Finding the mean using RxJava

I'm learning RxJava and this is what I attempted to find the mean of 'n' transactions. ...
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1answer
62 views

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