Test Quiz - Stat Modeller

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Team Stat Modeller

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You want to generate numbers in R which are alternate number from 1 to 100. Which command you will use?

sequence

rep

repeat

seq

None

Which command is used to create a data frame?

create data frame()

dataframe()

data_frame()

data.frame()

None

Which chart is suitable when there are two quantitative variables?

Box Plot

Histogram

Clustered Bar Chart

Scatter Plot

None

Which of the following gives warning while creating matrix?

M1 <- matrix(1:6, nrow = 3, ncol = 2)

M1 <- matrix(1:10, nrow = 5, ncol = 2)

M1 <- matrix(1:9, nrow = 3, ncol = 3)

M1 <- matrix(1:5, nrow = 3, ncol = 2)

None

Which command is used to import data from the CSV file in R?

read.csv()

import.csv()

import_csv()

read_csv()

None

How to prepare scatter plot using a base package?

point()

plot()

scatter()

xy()

None

What is the command to see the current working directory?

currentwd()

setwd()

getcwd()

getwd()

None

You can perform graphical analysis in R

True

False

None

To remove any object from the Global Environment, we can use __________ command.

rm()

del()

delete()

eliminate()

None

To get descriptive statistics in one command, we can use _____________.

summary()

statistics()

describe()

descriptive()

None

In matrix, what is the the role of "byrow = T" argument?

It will eliminate rows

It will arrange data row wise

It will not arrange data row wise

It will keep only rows

None

What is the command in R to check data type of the object?

datatype()

class()

showdata()

dtype()

None

Which is the command to create a histogram using a base package?

histogram(x)

plot(x)

graph(x)

hist(x)

None

To add interactivity to the charts prepared using ggplot2 package, we can use ________ package.

Plotly

Ggplotly

DataExplorer

Readxl

None

Data on intelligence level is collected as High, Medium and Low. Which type of data it is?

Ordinal

Interval

Nominal

Ratio

None

To clear console, we can use ________ command (in Windows system)

Ctrl + L

Ctrl + D

Ctrl + C

Ctrl + M

None

Which of the following will not generate the Logical Vector?

log1 <- c("T", "F", "F", "T", "F")

log1 <- c(TRUE, FALSE, FALSE, TRUE, FALSE)

logi1 <- c(T, F, F, T, F)

logical <- c(T, F, F, T, F)

None

Which package is required to import data from Excel in R?

readxl

read_excel

excelpackage

readr

None

Researcher is collecting data of Gender (Male, Female). Which type of data it is?

Interval

Nominal

Ratio

Ordinal

None

To get list of all the variables in the Global Environment, you have to use __________ command.

ls()

global()

list_variables()

list()

None

Which of the following are the Homogeneous structure in R? [Select all applicable]

Array

Vector

List

Matrix

Which of the following are the Heterogeneous structure in R? [Select all applicable]

Array

Vector

List

Data Frame

Which argument is used to give column and row name in the matrix?

column()

dimnames()

column_name()

row_name()

None

Mr. Gupta is collecting data of States of the respondents, what type of data it will be in R?

alphabet

character

complex numbers

state

None

List can hold only similar data types.

True

False

None

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