10 Questions
What is the function used to plot a histogram of the 'Sepal.Width' variable from the 'iris' dataset?
hist(iris$Sepal.Width)
Which function is used to create subsets of the 'iris' dataset for each species before plotting multiple histograms in a single chart area?
subset(iris, iris$Species=='versicolor')
Which of the following is NOT a common source of data for business intelligence and analysis?
Server-side scripting
Who originally developed exploratory data analysis techniques?
John Tukey
What is the primary purpose of exploratory data analysis (EDA)?
Discover patterns and anomalies in data
How does exploratory data analysis (EDA) benefit stakeholders?
By confirming they are asking the right questions
What is data visualization?
It is the graphical representation of information and data
What role do data visualization tools play in the world of Big Data?
They are essential for analyzing massive amounts of information and making data-driven decisions
How is Python commonly used in relation to data visualization tools?
Python is used in developing data visualization tools
Which programming language and environment is widely used for statistical computing and graphics in data science?
R
This quiz covers data visualization in R using the 'iris' dataset. It includes displaying the dimension of the dataset, plotting a histogram of a variable, creating a pie chart of the frequency table, and plotting multiple charts in a single chart area based on subsets of the data frame.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
