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R - Quiz(MCQ)
Which of the following statement changes column name to h and f?
A)
rownames(m) <- c(“f”, “f”)
B)
rownames(m) <- c(“h”, “f”)
C)
columnnames(m) <- c(“h”, “f”)
D)
colnames(m) <- c(“h”, “f”)

Correct Answer :   colnames(m) <- c(“h”, “f”)

Explanation : Column names and row names can be set separately using the colnames() and rownames() functions.

Recently Updated in R Questions
_____ is simplest class of analytics.
A)
Predictive
B)
Prescriptive
C)
Summarization
D)
Descriptive

Correct Answer :   Descriptive

Explanation : Descriptive is the simplest class of analytics. Predictive analytics can only forecast what might happen in the future because all predictive analytics are probabilistic in nature.

Which of the following involves predicting a categorical response?
A)
Classification
B)
Clustering
C)
Regression
D)
Summarization

Correct Answer :   Classification

Explanation : Classification techniques are widely used in data mining to classify data.

________ is proprietary tool for predictive analytics.
A)
R
B)
EDR
C)
SAS
D)
SSAS

Correct Answer :   SAS

Explanation : SAS (Statistical Analysis System) is a software suite developed by SAS Institute for advanced analytics.

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