DSCI 100 ACTUAL FINALS ANSWERS AND
QUESTIONS SET A+
✔✔bar plots - ✔✔visualize comparisons of amounts
- geom_bar
✔✔histograms - ✔✔visualize the distribution of one quantitative variable
- geom_histogram
✔✔What is the first guideline for a good visualization? - ✔✔Make sure the visualization
answers the question.
✔✔Why are legends and labels important in visualizations? - ✔✔They help clarify the
information presented.
✔✔What should be ensured about the text in a visualization? - ✔✔The text should be
big enough to be easily read.
✔✔What is important about data visibility in visualizations? - ✔✔Data should be clearly
visible.
✔✔What type of color schemes should be used in visualizations? - ✔✔Color schemes
that are understandable by everyone.
✔✔How can conveying the same message in multiple ways be beneficial? - ✔✔It can
help reinforce understanding.
✔✔What is a guideline regarding the use of colors in visualizations? - ✔✔Use colors
sparingly.
✔✔What should be avoided to prevent clutter in visualizations? - ✔✔Do not overplot.
✔✔What should be done regarding the plot area in a visualization? - ✔✔Make the plot
area as big as needed.
, ✔✔What is a guideline regarding axis adjustments in visualizations? - ✔✔Do not adjust
the axes to zoom in on small differences.
✔✔5 things when asked to summarize a graph - ✔✔- direction, strength, and shape
- linearity of trends, distribution
✔✔raster images - ✔✔compressed and take up less space
✔✔vector images - ✔✔collection of mathematical objects
✔✔What is version control? - ✔✔The process of keeping a record of changes to
documents.
✔✔What information does version control track? - ✔✔When changes were made and
who made them.
✔✔What can version control allow us to do? - ✔✔View earlier versions of the project
and revert changes.
✔✔Why is version control useful? - ✔✔It helps in understanding how and why decisions
were made.
✔✔what do we need for version control - ✔✔version control system (git) and repository
hosting service (github)
✔✔version control system - ✔✔git
- software responsible for tracking changes, sharing changes, obtaining changes, and
resolving conflicting edits
✔✔What is a repository hosting service? - ✔✔A service that stores a copy of the version
controlled project online. (github)
✔✔What can collaborators do on a repository hosting service? - ✔✔They can access it
remotely, discuss, and distribute the project.
✔✔commits - ✔✔history records of all versions of the project files that have been
created
✔✔What does committing changes to a local repository do? - ✔✔It tells git to keep a
record of the current version of your work.
✔✔What does adding files to the staging area refer to? - ✔✔It refers to telling git which
files should be included in this save.
QUESTIONS SET A+
✔✔bar plots - ✔✔visualize comparisons of amounts
- geom_bar
✔✔histograms - ✔✔visualize the distribution of one quantitative variable
- geom_histogram
✔✔What is the first guideline for a good visualization? - ✔✔Make sure the visualization
answers the question.
✔✔Why are legends and labels important in visualizations? - ✔✔They help clarify the
information presented.
✔✔What should be ensured about the text in a visualization? - ✔✔The text should be
big enough to be easily read.
✔✔What is important about data visibility in visualizations? - ✔✔Data should be clearly
visible.
✔✔What type of color schemes should be used in visualizations? - ✔✔Color schemes
that are understandable by everyone.
✔✔How can conveying the same message in multiple ways be beneficial? - ✔✔It can
help reinforce understanding.
✔✔What is a guideline regarding the use of colors in visualizations? - ✔✔Use colors
sparingly.
✔✔What should be avoided to prevent clutter in visualizations? - ✔✔Do not overplot.
✔✔What should be done regarding the plot area in a visualization? - ✔✔Make the plot
area as big as needed.
, ✔✔What is a guideline regarding axis adjustments in visualizations? - ✔✔Do not adjust
the axes to zoom in on small differences.
✔✔5 things when asked to summarize a graph - ✔✔- direction, strength, and shape
- linearity of trends, distribution
✔✔raster images - ✔✔compressed and take up less space
✔✔vector images - ✔✔collection of mathematical objects
✔✔What is version control? - ✔✔The process of keeping a record of changes to
documents.
✔✔What information does version control track? - ✔✔When changes were made and
who made them.
✔✔What can version control allow us to do? - ✔✔View earlier versions of the project
and revert changes.
✔✔Why is version control useful? - ✔✔It helps in understanding how and why decisions
were made.
✔✔what do we need for version control - ✔✔version control system (git) and repository
hosting service (github)
✔✔version control system - ✔✔git
- software responsible for tracking changes, sharing changes, obtaining changes, and
resolving conflicting edits
✔✔What is a repository hosting service? - ✔✔A service that stores a copy of the version
controlled project online. (github)
✔✔What can collaborators do on a repository hosting service? - ✔✔They can access it
remotely, discuss, and distribute the project.
✔✔commits - ✔✔history records of all versions of the project files that have been
created
✔✔What does committing changes to a local repository do? - ✔✔It tells git to keep a
record of the current version of your work.
✔✔What does adding files to the staging area refer to? - ✔✔It refers to telling git which
files should be included in this save.
