Publications by George Cruz
DS607 - Project 2 - Part 1
library(tidyr) library(dplyr) Introduction The goal of this assignment is to practice in preparing different datasets for downstream analysis work. We were tasked with choosing three wide datasets identified in the Week 5 Discussion items. The datasets I chose were: NYC Subway Ridership by Cameron Smith US Gross Domestic Product by Quarter (20...
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ds607-hw7
Data 607 Homework 7 Pick three of your favorite books on one of your favorite subjects. At least one of the books should have more than one author. For each book, include the title, authors, and two or three other attributes that you find interesting. Take the information that you’ve selected about these three books, and separately create three...
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DS606-HW5
Foundations for Inference library(tidyverse) library(openintro) Heights of adults. (7.7, p. 260) Researchers studying anthropometry collected body girth measurements and skeletal diameter measurements, as well as age, weight, height and gender, for 507 physically active individuals. The histogram below shows the sample distribution of heights ...
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DS606 - HW6
library(tidyverse) library(openintro) library(scales) 6.6 2010 Healthcare Law. On June 28, 2012 the U.S. Supreme Court upheld the much debated 2010 healthcare law, declaring it constitutional. A Gallup poll released the day after this decision indicates that 46% of 1,012 Americans agree with this decision. At a 95% confidence level, this sampl...
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DS607-HW8
Assignment – Web APIs The task is to choose one of the New York Times APIs, construct an interface in R to read in the JSON data, and transform it into an R DataFrame. Setting up I will store the api-key value in an environment variable by using Sys.setenv library(tidyverse) library(openintro) library(httr) ## Warning: package 'httr' was bui...
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Facebook Recommender System
Facebook Facebook is an American Social media platform which currently has over 2.74 billion monthly active users. It started as a social network and grew into a conglomerate that offers several social media platforms: Facebook, Instagram, WhatsApp, Messenger, among others. Scenario Analysis Who are your target users? Facebook’s target user ...
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DS607-HW10
Week 10 Assignment Reproduce and extend Sentiment analysis with tidy data library(tidytext) library(janeaustenr) library(dplyr) library(stringr) library(tidyr) Starting analysis Get Sentiment tables AFINN from Finn Årup Nielsen ## # A tibble: 2,477 x 2 ## word value ## <chr> <dbl> ## 1 abandon -2 ## 2 abandon...
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DS606 - Data Project Proposal
Data Preparation # load data library(tidyverse) library(scales) library(infer) library(psych) library(httr) library(jsonlite) The Data Set was obtained from Kaggle. This dataset was collected using the YouTube API. Loading the Data. #Get the videos csv raw_video_df <- read_csv(file="https://raw.githubusercontent.com/georg4re/ds606/main/dat...
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DS606 - Lab 6
#Inference for categorical data library(tidyverse) library(openintro) library(infer) library(scales) Exercise 1 What are the counts within each category for the amount of days these students have texted while driving within the past 30 days? data(yrbss) text_while_driving <- yrbss %>% filter(text_while_driving_30d == 30) summary(text_w...
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DS605-HW12
Introduction to Data 1. ScatterPlot and Initial Linear Regression 2. Which Model is Better? 3. Forecast 4. Build Models. 5. Forecast LifeExp Introduction to Data The attached who.csv dataset contains real-world data from 2008. The variables included follow. Country: name of the country LifeExp: average life expectancy for the country in years In...
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