Learning R for Data Visualization (Video 4)

Learning R for Data Visualization (Video 4)

Assessment

Interactive Video

Information Technology (IT), Architecture

University

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

This video tutorial covers the process of importing data into R, focusing on setting the working directory and using the read.table function. It explains how to specify parameters such as column separation, data structure, and handling missing values. The tutorial also demonstrates how to check the structure of the imported data to ensure it matches expectations. By the end, viewers will have successfully imported a data file into R and verified its structure.

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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary function used in R to import text files and CSVs?

read.table

read.csv

import.data

load.file

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which symbol is commonly used to separate columns in a CSV file?

Comma

Whitespace

Semicolon

Tab

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What should you specify in R if the first row of your data represents column titles?

row.names = FALSE

col.names = TRUE

sep = ','

header = TRUE

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How can you set the working directory in RStudio?

By selecting the Tools menu

Through the Edit menu

By opening the File menu

Using the setwd() function

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which function is used to check the structure of an imported dataset in R?

summary()

structure()

str()

check()

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