Charts and Visualizations
What is the most common visualization people use?
Bar chart
What is the most common problem with data?
Missing values or incomplete records
What are the two types of functions of visualizations?
Exploratory and explanatory.
What is the common guideline most visualizations experts agree with the most?
Eliminate clutter
What is the type of visualization that Cole Nussbaumer Knaflic hates the most?
Pie chart
What is the visualization that you should avoid the most?
Pie chart
How can you prevent yourself from committing data aggregation mistakes?
Explore the boundaries of your data
What are the two types of forms of visualizations?
Static and interactive
What is a recommended guideline for the use of color?
Start with gray
What is commonly confused with causality?
Correlations
What is the most common chart to visualize time data?
Line chart
What is essential practice when doing data transformations, calculations, and cleaning?
Track all changes.
What are three dashboard actions that you can add to Tableau visualizations?
You can add six dashboard actions in Tableau: highlight, filter, go to URL, go to sheet, change parameters, and change set values.
What is Tufte's sixth principle?
Content counts most of all
What is known as the intensity of the color?
Saturation
When would you use a Pareto Chart?
You should use it to visualize a distribution.
What is a common mistake when dealing with percentages?
The commond mistake is doing operations between percentages from different items.
What is Ben Schneiderman's mantra?
"Overview first, followed by zoom and filter, and then details on-demand"
What is always king on visualizations?
The story
What are the three basic questions you answer on any data visualization project?
Who, What, and How of the story?
What is the most common application of candlestick charts?
Stocks and cryptocurrencies
What should you never do with data?
Never use data blindly
When do you add interactions to explanatory visualizations?
When they help tell or emphasize the story
What is the famous graph that Tufte uses to propose his design principles?
The march of Napoleon’s army in the Russian campaign of 1812 by Charles J. Minard
What is slideument?
Slideument is when you create a set of slides that represent a document or report.