Stats Exam #1: R Questions and Correct Answers/ Latest Update / Already Graded

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Stats Exam #1: R Questions and Correct
Answers/ Latest Update / Already Graded
Console

Ans: Interactive window that consists of the bottom left pane.
This is where you type commands after the > prompt, one at a
time


Editor

Ans: (script window) Window at the top left pane where
collections of commands can be edited and saved


Run button

Ans: Can send code from the editor to console window by
highlighting code and hitting this button.


Workspace/history window

Ans: top right pane that shows all objects you have typed in R.


files/plots/packages/help window




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Ans: Bottom right pane where you can open files, view plots
(histograms, pie, graphs), and load packages.


Export

Ans: located at the top of the window, used to save a plot as an
image or PDF.


What is the simplest thing you can use R for?

Ans: Use as a calculator


If R thinks that a command is not complete, what prompt does it give?

Ans: "+" on the next line and subsequent lines until the
command is completed.


Operator for subtraction

Ans: -


Operator for multiplication

Ans: *



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Operator for division

Ans: /


Operator for power

Ans: ^


Operator for less than

Ans: <


Operator for less than or equal to

Ans: <=


Operator for greater than

Ans: >


Operator for greater than or equal to

Ans: >=


Operator for equal to

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Ans: ==


Operator for or

Ans: |


Operator for not equal to

Ans: !=


The operators <,<=..., != are logical operators and give what type of
answer?

Ans: TRUE or FALSE


Objects

Ans: anything that can be assigned a name, and can take a
variety of forms: scalars, vectors, matrices, arrays, etc.


Variable

Ans: simply a label for an object or piece of information


assignment symbol

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