# Questions tagged [data-analysis]

Questions on the use of mathematical techniques to extract properties from given data. Consider if your question might be more suited for Cross Validated (stats.SE) instead.

22 questions
6k views

### Polynomial fitting where polynomial must be monotonically increasing

Given a set of monotonically increasing data points (in 2D), I want to fit a polynomial to the data which is monotonically increasing over the domain of the data. If the highest x value is 100, I don'...
18k views

### Boxplots and bar graphs

I'm studying for the GRE and came across several questions that I was unable to answer in a practice booklet, even after looking at the answer and trying to work backwards, and searching google and ...
165 views

### Creating a function incrementally

Let's say that I need a computer program to generate a function that fits a data set which has $(x,y)$ data points. Let's say that I get the data set one point at a time, I don't know how many data ...
81k views

### calculation of median of grouped data

While calculating the median of grouped data of total frequency $N$, in order to find the median class which value should be taken into consideration to match against cumulative frequency : $\frac N2$ ...
5k views

### Where to start learning about topological data analysis?

I was wondering if anyone could help me out with finding a nice introductory introductory text for topological data analysis (I'm speaking as somebody who has two semesters of experience with topology,...
5k views

### What is the most scientific way to assign weights to historical data?

This is a common question I usually face while processing historical data. I have year on year data of an event for the past N years.I would like to assign weights to the data of these N years so that ...
231 views

### Mathematical Background Required for Advanced Machine Learning Concepts

What are the must-know concepts and best resources for preparing the mathematical background for advanced machine learning studies? Currently, looking into the book What is Mathematics? by Richard ...