Publications by Yuxia Wu
Quiz 2
In this exercise you will learn to plot data using the ggplot2 package. To answer the questions below, use Chapter 4.3 Categorical vs. Quantitative Data Visualization with R. # Load packages library(tidyquant) library(tidyverse) # Import stock prices stock_prices <- tq_get(c("WMT", "TGT", "AMZN"), get = "stock.prices", from = "2020-01-01") # ...
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Bivariate Graphs
In this exercise you will learn to plot data using the ggplot2 package. To answer the questions below, use Chapter 4.3 Categorical vs. Quantitative Data Visualization with R. # Load packages library(tidyquant) library(tidyverse) # Import stock prices stock_prices <- tq_get(c("AAPL", "MSFT"), get = "stock.prices", from = "2020-01-01") stock_pri...
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Introduction to ggplot2
# load data data(CPS85 , package = "mosaicData") ggplot The summary of the text goes here… # specify dataset and mapping library(ggplot2) ggplot(data = CPS85, mapping = aes(x = exper, y = wage)) geoms Geoms specify the type of plot you want. # add points ggplot(data = CPS85, mapping = aes(x = exper, y = wage)) + geom_point() ...
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Clean data
In this exercise you will learn to clean data using the dplyr package. To this end, you will follow through the codes in one of our e-texts, Data Visualization with R. The given example code below is from Chapter 1.2 Cleaning data. # Load package library(tidyverse) # Import data data(starwars) starwars Q1 select Keep the variables name, eye_col...
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Quiz 1-b
Use the given code below to answer the questions. Q1 Import Netflix stock prices, instead of Apple. Hint: Insert a new code chunk below and type in the code, using the tq_get() function above. Replace the ticker symbol. Find ticker symbols from Yahoo Finance. ## Load package library(tidyverse) # for cleaning, plotting, etc library(tidyquant) # f...
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Mock Quiz 1
Use the given code below to answer the questions. Q1 Get Walmart stock prices, instead of Apple. Hint: Insert a new code chunk below and type in the code, using the tq_get() function above. Replace the ticker symbol for Walmart. You may find the ticker symbol for Microsoft from Yahoo Finance. ## Load package library(tidyverse) # for cleaning, pl...
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My First RMarkdown with Code
Use the given code below to answer the questions. Q1 Get Amazon stock prices, instead of Apple. Hint: Insert a new code chunk below and type in the code, using the tq_get() function above. Replace the ticker symbol for Microsoft. You may find the ticker symbol for Microsoft from Yahoo Finance. ## Load package library(tidyverse) # for cleaning, p...
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My First Publication
Q1 What is R? R is a language and environment for statistical computing and graphics. Q2 What is RStudio? It’s an open source and professional software for data. Q3 What is R packages? R packages likes app packages, the fundamental unit of shareable code is the package. Hint: Type your answer in bold. Note: For help with RMarkdown syntax, go ...
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