Business Analytics using R Programming MCQ with Answers

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Online MCQ Quiz of Business Analytics using R Programming

Business Analytics using R Programming

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Q: What is a geom in the ggplot2 system?

A. a method for mapping data to attributes like color and size

B. a method for making conditioning plots

C. a statistical transformation

D. a plotting object like point, line, or other shape

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Q: Data cleaning involves repeated cycles of

A. screening

B. diagnosing

C. treatment and

D. documentation of this process

E. All the above

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Q: ___is a subset of___

A. Information design, visual modality

B. Information design, data visualization

C. None of the answers are correct

D. Data visualization, information design

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Q: Functions are defined using the___directive and are stored as R objects

A. function()

B. funct()

C. functions()

D. All of the mentioned

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Q: Studies show that listening to music while studying can improve your memory. To demonstrate this, a researcher obtains a sample of 36 college students and gives them a standard memory test while they listen to some background music. Under normal circumstances (without music), the mean score obtained was 25 and standard deviation is 6. The mean score for the sample after the experiment (i.e With music) is
What is the null hypothesis in this case?

A. Listening to music while studying will not impact memory

B. Listening to music while studying may worsen memory

C. Listening to music while studying may improve memory

D. Listening to music while studying will not improve memory but can make it worse

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Q: find the output
varx<-23, 34->vary
print(varx == vary)
A. True

B. False

C. None of the above

D. Error

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Q: R has how many atomic classes of objects?

A. 1

B. 2

C. 3

D. 5

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Q: ___function is used to watch for all available packages in library

A. lib()

B. fun.lib()

C. libr()

D. library()

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Q: Is It possible to inspect the source code of R?

A. Yes

B. No

C. Can't say

D. Some times

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Q: In order to use the R-related functionality in Dundas BI, you must have access to an existing___

A. Console

B. Terminal

C. Packages

D. R serve

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Q: Which Package contains most fundamental functions to run R?

D. parent

A. root

B. child

C. base

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Q: ___and___are types of matrices functions?

A. Apply and sapply

B. Apply and lapply

C. Both

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Q: How many types of atomic vectors are present?

A. 3

B. 4

C. 5

D. 6

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Q: R is an___programming language?

A. Closed source

B. GPL

C. Open source

D. Definite sourc

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Q: Any fact that the solution can assume to be true when the use case begins is what?

A. A win

B. A Failure

C. A success

D. A Precondition

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Q: A Use Case is a set of steps, typically defining interactions between a role, True of False

A. True

B. False

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Q: The third step in decision making process is

A. linear predictions

B. dependent predictions

C. making predictions

D. independent predictions

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Q: ___is used to apply a function over subsets of a vector

A. apply()

B. lapply()

C. mapply()

D. tapply()

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Q: Business analytics results in which of these?

A. Evidence Based Decisions

B. Data Driven Decisions

C. Better Decisions

D. All of these are correct

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Q: Point out the WRONG statement?

A. Early versions of the S language contain functions for statistical modeling

B. The book Programming with Data by John Chambers documents S version of the language

C. In 1993 Bell Labs gave StatSci (later Insightful Corp.) an exclusive license to develop and sell the S language

D. The book Programming with Data by IBM documents S version of the language

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Business Analytics using R Programming MCQ with Answers

Online MCQ Quiz of Business Analytics using R Programming

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