Test Quiz - Stat Modeller

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Team Stat Modeller

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

Interval

Ordinal

Ratio

Nominal

None

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

It will eliminate rows

It will not arrange data row wise

It will arrange data row wise

It will keep only rows

None

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

character

complex numbers

alphabet

state

None

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

delete()

rm()

del()

eliminate()

None

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

Ordinal

Nominal

Interval

Ratio

None

Which chart is suitable when there are two quantitative variables?

Clustered Bar Chart

Box Plot

Histogram

Scatter Plot

None

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

global()

list()

ls()

list_variables()

None

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

dimnames()

column_name()

column()

row_name()

None

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

Ctrl + M

Ctrl + D

Ctrl + C

Ctrl + L

None

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

repeat

seq

rep

sequence

None

Which command is used to create a data frame?

create data frame()

data.frame()

data_frame()

dataframe()

None

Which of the following gives warning while creating matrix?

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

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

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

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

None

List can hold only similar data types.

False

True

None

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

excelpackage

readxl

read_excel

readr

None

What is the command to see the current working directory?

getwd()

setwd()

getcwd()

currentwd()

None

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

import_csv()

import.csv()

read_csv()

read.csv()

None

Which of the following will not generate the Logical Vector?

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

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

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

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

None

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

datatype()

dtype()

showdata()

class()

None

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

describe()

summary()

descriptive()

statistics()

None

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

Readxl

Plotly

Ggplotly

DataExplorer

None

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

Vector

Matrix

Array

List

How to prepare scatter plot using a base package?

plot()

point()

xy()

scatter()

None

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

Array

List

Data Frame

Vector

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

histogram(x)

plot(x)

hist(x)

graph(x)

None

You can perform graphical analysis in R

False

True

None

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