## Recently Published

##### CUNY - DATA624 - HW9

Decision Tree Exercises

##### CUNY - DATA624 - HW8

Modeling with Support Vector Machines, K-Nearest Neighbors and MARS

##### CUNY - DATA624 - HW7

Linear Regression models on Compound Permeability and Chemical Manufacturing Processes

##### CUNY DATA624 - Project 1

Forecasting ATM Cash Withdrawals and Residential Power Consumption with ETS and seasonal ARIMA models

##### CUNY - DATA624 - HW6

ARIMA modelling

##### CUNY - DATA624 - HW5

Forecasting time series using Holt-Winters models, etc .

##### CUNY DATA624 - HW 4

Visualization and Imputation of the Glass and Soybean datasets from mlbench

##### CUNY DATA624 - HW 3

Time Series Decompositions

##### CUNY DATA624 - HW 2

Box-Cox Power Transformations and lambda parameter calculations

##### CUNY DATA624 - HW 1

Time Series Visualization using fpp2 package

##### CUNY DATA 621 HW4

Logistic Regression on Car Insurance Data

##### CUNY DATA 605 Wk12

Looking at LifeExp Regression models

##### CUNY DATA 605 Wk12 Discussion

Prediction Horseshoe Crab Carapace Width

##### CUNY DATA 605

Regression on Quality of Life Indices

##### CUNY DATA606 - Wk10

Using Markov Chains

##### CUNY - DATA 605, HW Week 2

Proving a matrix times its transpose is not associative. Also creating a function to perform LDU decomposition of any size square matrices.

##### CUNY- DATA 605, Wk1 HW

Elementary matrix calculations, LU Matrix Decomposition

##### CUNY - DAT606, Final Project

Investigating the relationship between TOEFL and SAT scores.

##### CUNY DATA607 - Final Project

A dataframe of frequently occurring TOEFL vocab words with Chinese translation

##### CUNY - DATA607 Tidyverse Project

Exploring the relationship between Income and Fear of Earthquakes

##### CUNY DATA606- Lab8, ZHerold

Lab 8, performing multi-variate regression analysis on course evaluation ratings at the University of Texas Austin.

##### CUNY - DATA606 Lab5

Hypothesis testing of numeric variables, using pregnancy data

##### CUNY DATA606 - Chapter 7, Herold

Exercises on Linear Regression

##### CUNY DATA606 - Lab7 - Moneyball Regressions

Looking at 7 traditional variables and 3 "Moneyball" variables as predictors of runs during the 2011 MLB season.

##### CUNY DATA 607 - Discussion 11

Recommendation Engines: Udemy.com

##### CUNY - DATA 606, Lab 6, Zachary Herold

A closer look at confidence intervals, using a survey on atheism.

##### CUNY - DATA 607, Project 4

A prelude into machine learning, modeling the SpamAssassin spam/ham classifier

##### CUNY DATA 607 - Wk9 New York Times API

Converting JSON code loaded from the NYT API into a dataframe.

##### CUNY - DATA 606, Lab 4b, Zachary Herold

Lab 4 continued

##### CUNY DATA606 - Chapter 4 - Herold

Foundations for Inference exercises

##### CUNY - DATA607 Wk7 Web Scraping

Creating HTML, XML and JSON files, then loading them into R and converting them into dataframes.

##### CUNY DATA606_Chapter3

Distribution

##### CUNY DATA607 Project 2_ZHerold

An exploration of cabin class's impact on survival rates for men, women and children aboard the Titanic

##### CUNY DATA607 Wk5 Dplyr Assignement

Performing Data Transformations of Airline delay data out of five Western US cities

##### CUNY - DATA 606, Lab 2, Zachary Herold

Comparing the streaks of Kobe Bryant versus a simulated shooter, investigating the "hot hand" hypothesis.

##### CUNY DATA 607 Project 1 - Chess Tournament Cross Table

Using Regex to extract chess data from a txt file.

##### CUNY DATA607 Wk3 Regex Assignement

Manipulating a Simpson's names dataframe.

##### CUNY DATA606 - Chapter 1 Assignment_Herold

Questions from the OpenIntro course

##### CUNY - DATA 607, Wk2 Assignment

In conjunction with movrate.sql from MySQL server.
Looks at movie ratings randomly generated.

##### DATA606 _Lab0â€”â€”ZacharyHerold

Various calculations and visualizations of Boy-Girl birth data from 17th Century and today.

##### CUNY - DATA 607, Wk1 Assignment

UCI Repository data on Mushrooms, subsetted, with columns and values renamed.