Publications by Jered Ataky
DATA606-LAB5a
In this lab, you will investigate the ways in which the statistics from a random sample of data can serve as point estimates for population parameters. We’re interested in formulating a sampling distribution of our estimate in order to learn about the properties of the estimate, such as its distribution. Setting a seed: We will take some rando...
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DATA606-LAB7
Getting Started Load packages In this lab, we will explore and visualize the data using the tidyverse suite of packages, and perform statistical inference using infer. The data can be found in the companion package for OpenIntro resources, openintro. Let’s load the packages. library(tidyverse) library(openintro) library(infer) The data Ever...
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DATA607_tidyverse_recipe
Vignette: Getting to know dplyr & stringr Jered Ataky 2020-10-25 1. Introduction “dplyr” is one of the tidyverse packages, and it is used for data manipulation. In other words, it is a grammar of data manipulation providing verbs that help to solve many problems faced in data manipulation. “stringir” in the other is also one of a tidyvers...
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DATA606-LAB8
The Human Freedom Index is a report that attempts to summarize the idea of “freedom” through a bunch of different variables for many countries around the globe. It serves as a rough objective measure for the relationships between the different types of freedom - whether it’s political, religious, economical or personal freedom - and other s...
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DATA607-ASS9
Overview Problem The New York Times web site provides a rich set of APIs, as described here: https://developer.nytimes.com/apis I need to start by signing up for an API key. My 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. Approach The New York Times ...
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DATA606_Project_proposal
1. Data Preparation # Libraries library(tidyverse) library(statsr) library(infer) library(psych) # Load data from Github repository data <- read.csv("https://raw.githubusercontent.com/jnataky/DATA-607/master/A2_Various_dataset_transformation/students_performance.csv") # Take a look at its structure glimpse(data) # Since there are m...
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DATA606_Presentation
Chapter 7 - Inference for Numerical Data 7.21 Global warming, Part II. We considered the change in the number of days exceeding 90°F from 1948 and 2018 at 197 randomly sampled locations from the NOAA database in Exercise 7.19. The mean and standard deviation of the reported differences are 2.9 days and 17.2 days. (a) Calculate a 90% confidence ...
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DATA606_lab9
knitr::opts_chunk$set(eval = TRUE, message = FALSE, warning = FALSE) Grading the professor Many college courses conclude by giving students the opportunity to evaluate the course and the instructor anonymously. However, the use of these student evaluations as an indicator of course quality and teaching effectiveness is often criticized because t...
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DATA607_Final_project
# Load libraries library(tidyverse) library(plyr) library(kableExtra) library(plotly) library(corrplot) ## Warning: package 'corrplot' was built under R version 4.0.3 library(PerformanceAnalytics) ## Warning: package 'PerformanceAnalytics' was built under R version 4.0.3 ## Warning: package 'xts' was built under R version 4.0.3 ## Warning: p...
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DATA606_final_project
December 3, 2020 Students Performance in Exams Overview Data is collected by kaggle to explore and build in a web-based data science environment. There are 1000 observations with 8 variables in this given data set, and each case represents a student in the United States. It is an observatory study in which: The response variable is mean tests s...
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