## Recently Published

##### p-hacking: A demonstration

This note is a simple demonstration of p-hacking. I argue that if a researcher doesn't decide on the sample size ex ante and keeps collecting data until they reach p <=0.05, the results can be severely misleading.

##### United Social Media Crisis - Demo Presentation

This deck of slides is a demo of react.js using RMarkdown

##### ggplot2 Themes

This note is derived from Chapter 8 of ggplot2 book authored by Hadley

##### Random Forest and Credit Score

This is a simple example on using random forest for getting default risk and building credit score. This is a part of the DA 6813 course in UTSA MSDA program.

##### ROC Curve

Example for the UTSA students taking my DA 6813 course

##### Homework #1 - DA 6813

This homework was shared with the students at the beginning of October.

##### Homework #1

This is the solution of homework #1 for DA 6813

##### Ordinal Regression

This is a note for the UTSA students taking my DA 6813 course

##### Calculating CLV

This note is for the UTSA students taking my Data Analytics Applications (DA 6813) course

##### A Simple Example of Bootstrap

Shows you the power of bootstrap

##### Estimating Multinomial Logistic Regression Model in R

This is a note for the UTSA students taking my DA 6813 course.

##### Twitter Text Analysis

This note is for the UTSA students taking my DA 6813 course.

##### Dimensionality Reduction

These are class notes for DA 6213 at UTSA.

##### Example of Cross-Validation

Hand coding cross-validation in R

##### Analytics methods flowchart

This is a flowchart of the methods to use depending on the target variable type. The methods are limited to what we use in the DA 6813 course at UTSA

##### Support Vector Machines example

SVM example for the students of Data Analytics Application course (DA 6813) at the College of Business, UT at San Antonio

##### Cluster Analysis Example

K-means clustering on wine quality data