Free Printable R variable names

Free Printable Worksheets

Worksheets

R variable names

Total questions: 20

Worksheet time: 7mins

Name

Class

Date

1.

Which operator is an assignent operator in R?

a)

<<

b)

<-

c)

=-

d)

=+

2.

Which symbol is the digit "zero"?

a)

o

b)

O

c)

0

d)

x

3.

Which case is considered to be

a good (recommended) style in the Tidyverse?

a)

UpperCamelCase

b)

lowerCamelCase

c)

lower.dotted.case

d)

lower_snake_case

e)

UPPER_SNAKE_CASE

4.

Is this R variable name syntactically correct?

Does this code work?

student_names <- c("Jim", "Anne")

a)

Code does NOT work

b)

Code works but bad style

c)

Code works and good style

5.

firstobjectname <- 1

a)

Code does NOT work

b)

Code works but bad style

c)

Code works and good style

6.

obj_1 <- 1

a)

Code does NOT work

b)

Code works but bad style

c)

Code works and good style

7.

_object <- 1

a)

Code does NOT work

b)

Code works but bad style

c)

Code works and good style

8.

first.object.name <- 1

a)

Code does NOT work

b)

Code works but bad style

c)

Code works and good style

9.

0name0 <- 1

a)

Code does NOT work

b)

Code works but bad style

c)

Code works and good style

10.

first_object$name <- 1

a)

Code does NOT work

b)

Code works but bad style

c)

Code works and good style

11.

FIRSTOBJECTNAME <- 1

a)

Code does NOT work

b)

Code works but bad style

c)

Code works and good style

12.

Object.name.1 <- 1

a)

Code does NOT work

b)

Code works but bad style

c)

Code works and good style

13.

obj.....nr..........1 <- 1

a)

Code does NOT work

b)

Code works but bad style

c)

Code works and good style

14.

first!object!name <- 1

a)

Code does NOT work

b)

Code works but bad style

c)

Code works and good style

15.

.object <- 1

a)

Code does NOT work

b)

Code works but bad style

c)

Code works and good style

16.

first_object_name <- 1

a)

Code does NOT work

b)

Code works but bad style

c)

Code works and good style

17.

firstObjectName <- 1

a)

Code does NOT work

b)

Code works but bad style

c)

Code works and good style

18.

o001452475584 <- 1

a)

Code does NOT work

b)

Code works but bad style

c)

Code works and good style

19.

FIRST_OBJECT_NAME <- 1

a)

Code does NOT work

b)

Code works but bad style

c)

Code works and good style

20.

1objectname <- 1

a)

Code does NOT work

b)

Code works but bad style

c)

Code works and good style

Reset

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