Quiz 7 - Intro to R programming

Question 1

What are the pros of R? (give 3)

Answer 1

1. Powerful
2. Shows rows and columns of data
3. Free

Question 2

What is RStudio

Answer 2

the mediator between us and R; it is a user-friendly software

Question 3

What are the 3 main parts of R Studio

Answer 3

1. Script editor
2. Console
3. Workspace

Question 4

What is tidyverse in R?

Answer 4

A collection of R packages made for data science and analysis

Question 5

ggplot - explain

Answer 5

the input that allows the plotting of data

Question 6

What is the con of the console window?

Answer 6

Doesn’t save the files - is a ‘one time’ thing

Question 6

How to store a certain variable into R studio (write)

Answer 6

x <- ______

Question 7

Run through making variables (x and y) for equations
Multiplication
Adding
Division

Answer 7

x * y
x + y
x / y

Question 8

What are the 4 basic data types and give examples

Answer 8

1. Numeric - a <- 20
2. Character - b <- speech_data
3. Logical - c <- TRUE (vs UNTRUE)
4. Complex - d <- 2 + 3x

Question 9

What is the crucial factor about Character data (aka

Answer 9

You need ‘quotes’ in any line

Question 10

Which one(s) will throw an error? Why?
x <- 3
y <- ‘‘Sunday’’
z <- TRUE
A. x+x B. x+y C. z+1

Answer 10

B. x+y
C. z+1

Question 11

A researcher named a variable as “february”. What is the most likely data type?

A. numeric
B. character
C. logical
D. not possible to answer

Answer 11

D. not possible to answer

• you can’t classify that info just 1 way

Question 12

What is a vector in RStudio + give examples

Answer 12

a type of data structure used to store collections of the same type of data