The Data Scientists Toolbox Answer
The Data Scientists Toolbox Answer Of Coursera Quiz. In this post you will get Correct Quiz & Assignment Answer of The Data Scientists Toolbox
The Data Scientists Toolbox Answer
Offered By ”Johns Hopkins University”
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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
- Communicate your findings
- 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
History
Plots
Console
4.
Question 4
What command lists your R version, operating system, and loaded packages?
1 point
versions()
Sessioninfo()
sessionInfo()
5.
Question 5
What file extension do Projects in R use?
1 point
.Rproj
.R
.RPROJECT
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 2
On 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 remote add
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
git add .
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
[text that is shown](link.com)
(link.com)[text that is shown]
(text that is shown)[link.com]
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
Peer-graded Assignment: Assemble your toolbox
PROMPT
Set up a Github account (you may use your own name or a pseudonym).
Create a repo called datasciencecoursera
Copy and paste the link to your GitHub account (or a direct link to your datasciencecoursera repo)
https://github.com/CP-Tadeo
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
Submit the link to the HelloWorld.md file on your Github repo.
https://github.com/CP-Tadeo/datasciencesoursera
PROMPT
Fork the data sharing repository here:
Copy and paste the link to the forked repository on your Github account.
https://github.com/jtleek/datasharing
