Publications by Wiktoria Gnojek
Introduction to R and RStudio
First Lab - R Packages library(tidyverse) ## ── Attaching packages ─────────────────────────────────────── tidyverse 1.3.1 ── ## ✓ ggplot2 3.3.5 ✓ purrr 0.3.4 ## ✓ tibble 3.1.3 ✓ dplyr 1.0.7 ## ✓ tidyr 1.1.3 ✓ stringr 1.4.0 ## ✓ ...
1644 sym R (4063 sym/37 pcs) 5 img
DATA 607, Week 3
Week 3 Assignment Wiktoria Gnojek Part 1 Using the 173 majors listed in fivethirtyeight.com’s College Majors dataset [https://fivethirtyeight.com/features/the-economic-guide-to-picking-a-college-major/], provide code that identifies the majors that contain either “DATA” or “STATISTICS”. Please find the URL to the github file used for an...
2574 sym R (5440 sym/24 pcs)
DATA 607 Project 1
Project 1 for DATA 607 Wiktoria Gnojek The initial link to the data set can be found here; https://bbhosted.cuny.edu/bbcswebdav/pid-59650551-dt-content-rid-462255833_1/courses/SPS01_DATA_607_002_1219_1/SPS01_DATA_607_002_1219_1_ImportedContent_20210819013518/SPS01_DATA_607_001_1219_1_ImportedContent_20210818092307/SPS01_DATA_607_02_1202_1_Importe...
6348 sym R (3608 sym/17 pcs)
Project 2 DATA 607
Project 2 Libraries library(dplyr) ## ## Attaching package: 'dplyr' ## The following objects are masked from 'package:stats': ## ## filter, lag ## The following objects are masked from 'package:base': ## ## intersect, setdiff, setequal, union library(tidyr) The first data set chosen was posted by Charles Ugiagbe and focused on NYC Gift...
2431 sym R (10793 sym/25 pcs)
DATA 607-Working with XML and JSON in R
Assignment – Working with XML and JSON in R 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. library(RCurl) library(XML) library(rjson) library(RJSONIO) ## ## At...
856 sym R (5059 sym/21 pcs)
TidyVerse Part 1
In this assignment, you’ll practice collaborating around a code project with GitHub. GitHub repository:https://github.com/acatlin/FALL2021TIDYVERSE Loading Library library(tidyverse) ## ── Attaching packages ─────────────────────────────────────── tidyverse 1.3.1 ...
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Assignment 11
Assignment 11 Identify a recommender system web site, then answer the three scenario design questions for this web site. The source I will be using can be found at the following link; https://instagram-engineering.com/powered-by-ai-instagrams-explore-recommender-system-7ca901d2a882 In my assignment I will be looking at the Instagram recommender s...
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Final Project 607
Introduction Population rates have been increasing world wide, especially in Africa. Overlooking COVID, we can predict that population rates will keep increasing at a constant rate yearly. For the final project I wanted to explore population increase in Africa specifically. I wanted to understand what factors are contributing to the increase. I a...
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Homework 2 (605)
Problem Set 1 Show that ATA does not = AAT in general. (Proof and demonstration.) The inner rows/columns will not yield the same numbers after multiplication. In the transpose of A, the rows are the columns of original A (per lecture notes). A <- matrix(c(2,6,4,6), ncol = 2, nrow = 2) A ## [,1] [,2] ## [1,] 2 4 ## [2,] 6 6 AT <...
766 sym R (2233 sym/38 pcs)
Discussion Post 2 (605)
Determinants for a 2x2 and 3x3. Exercise C21, Page 353 Doing the computations by hand, find the determinant of the matrix below. ## creating the matrix twobytwo <- c(1,6,3,2) twobytwo <- matrix(twobytwo,nrow=2,ncol=2) twobytwo [,1] [,2] [1,] 1 3 [2,] 6 2 ## determinants (1*2)-(3*6) Exercise C23, Page 353 Doing the computations by...
1307 sym R (446 sym/8 pcs)