The Data Scientist’s Toolbox Quiz 2 (JHU) Coursera

github repo for rest of specialization: Data Science Coursera

Question 1

Which of the following commands will create a directory called data in your current working directory?

mkdir /Users/data
mkdir data
pwd data
mkdir ../data

Answer:
mkdir data

Question 2

Which of the following will initiate a git repository locally?

git merge
git pull
git init
git push

Answer:
git init

Question 3

Suppose you have forked a repository called datascientist on Github but it isn’t on your local computer yet. Which of the following is the command to bring the directory to your local computer?

(For this question assume that your user name is username)

git pull https://github.com/username/datascientist.git
git clone https://github.com/username/datascientist.git
git init
git pull datascientist master

Answer:
* git clone https://github.com/username/datascientist.git

Question 4

Which of the following will create a markdown document with a secondary heading saying “Data Science Specialization” and an unordered list with the following for bullet points: Uses R, Nine courses, Goes from raw data to data products

Option 1: 
*h2 Data Science Specialization

* Uses R

* Nine courses

* Goes from raw data to data product

Option 2:
### Data Science Specialization

* Uses R

* Nine courses

* Goes from raw data to data products

Option 3:
## Data Science Specialization

li Uses R

li Nine courses

li Goes from raw data to data products

Option 4:
*** Data Science Specialization

* Uses R

* Nine courses

* Goes from raw data to data products

Option 5:
## Data Science Specialization

* Uses R

* Nine courses

* Goes from raw data to data products

Answer:

## Data Science Specialization

* Uses R

* Nine courses

* Goes from raw data to data products

Question 5

Install and load the KernSmooth R package. What does the copyright message say?

install.packages("KernSmooth")
library("KernSmooth")

# Answer
# Copyright M. P. Wand 1997-2009