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#### Week- 1

Module One Summative Quiz

1.
Question 1

Which of these is NOT one of the main skills embodied by data scientists?

1 point

• Artificial intelligence
• Hacking skills
• Substantive expertise

2.
Question 2

What is the most important thing in Data Science?

1 point

• The question you are trying to answer
• Statistical inference
• Working with large data sets

3.
Question 3

Which of these might be a good title for a forum post?

1 point

• URGENT! R isn’t working!
• Removing rows with NAs in data.frame using subset(), R 3.4.3
• How do I get rnorm() to work?

4.
Question 4

What’s the first step in the data science process?

1 point

• Exploring the data
• Generating the question

5.
Question 5

Which of these is an example of a quantitative variable?

1 point

• Latitude
• Occupation
• Educational level

#### Week- 2

Module Two Summative Quiz

1.
Question 1

What does base R focus on?

1 point

• Mapping
• Statistical analysis
• Artificial intelligence

2.
Question 2

What is RStudio?

1 point

• A graphical user interface for R
• Version control software
• A programming language

3.
Question 3

What is the name of the quadrant in the bottom left corner of RStudio, in the default layout?

1 point

4.
Question 4

1 point

• versions()
• Sessioninfo()
• sessionInfo()

5.
Question 5

What file extension do Projects in R use?

1 point

#### Week- 3

Module Three Summative Quiz

1.
Question 1

What is a good example of a message to accompany a commit?

1 point

• Modified linear model of height to include new covariate, genotype
• Fixed problem with linear model
• Updated thing

2.
Question 2On each repository page in GitHub, in the top right hand corner there are three options. They are:

1 point

• Watch, star, fork
• Pull, clone, fork
• Commit, contributors, issues

3.
Question 3

Which of the following will initiate a git repository locally?

1 point

• git init
• git boom

4.
Question 4

What is the order of commands to send a file to GitHub from within RStudio?

1 point

• Commit > Push
• Stage > Commit message > Commit > Push
• Pull > Push > Commit

5.
Question 5

How do you add all of the contents of a directory to version control?

1 point

• cd ~/dir/name/of/path/to/file
• git commit -m “Message”

#### Week- 4

Module Four Summative Quiz

1.
Question 1

What is the format for including a link that appears as blue text in your markdown document?

1 point

2.
Question 2

Which of the following describes a predictive analysis?

1 point

• Using data collected in the past to predict values in the future
• Finding if one variable is related to another one
• Showing the effect on a variable of changing the values of another variable

3.
Question 3

We collect data on all the songs in the Spotify catalogue and want to
summarize how many are country western, hip-hop, classic rock, or other.
What type of analysis is this?

1 point

• Exploratory
• Descriptive
• Predictive

4.
Question 4

What might a confounder be in an experiment looking at the relationship
between the prevalence of white hair in a population and wrinkles?

1 point

• Age
• Socioeconomic status
• Sex

5.
Question 5

Which one of the following is an example of structured data?

1 point

• The text from a series of books
• Lung x-ray images
• A table of names and student grades

PROMPT
Set up a Github account (you may use your own name or a pseudonym).
Create a repo called datasciencecoursera

PROMPT
Create a text file called HelloWorld.md
Add the line “## This is a markdown file” (without the quotation marks) to the document
Push the document to the datasciencecoursera repo you created on Github