a) Functions b) Packages c) Variables d) Lists Answer: c Explanation: In R, the variables are not declared as some ...
View QuestionOn what basis of a variable, OS allocates memory and decides what can be stored in the reserved memory?
a) Data bases b) Data sets c) Data types d) Lists Answer: c Explanation: Based on the ...
View QuestionAn ordered factor is used to represent an __________
a) Ordinal variable b) Simple variable c) Coordinal variable d) Biordinal variable Answer: a Explanation: An ordered factor ...
View QuestionThe ________ stores the nominal values as a vector of integers in the range of 1 to unique values in the nominal variable.
a) Factor b) Matrix c) Lists d) Functions Answer: a Explanation: The factor stores the nominal values as ...
View QuestionAn ordered collection of objects or components are called ________
a) Data frames b) Datasets c) Databases d) Lists Answer: d Explanation: An ordered collection of objects ...
View QuestionWhich is more general than a matrix, in that different columns can have different modes?
a) Data types b) Data frames c) Data sets d) Databases Answer: b Explanation: A data frame is more ...
View Question_______ are similar to matrices but can have more than two dimensions.
a) Functions b) Packages c) Arrays d) Columns Answer: c Explanation: Arrays are similar to matrices which can ...
View Question__________ provides optional labels with the columns and rows.
a) Disnames b) Dimnames c) Denmes d) Demnesd Answer: b Explanation: byrow=TRUE indicates that the matrix should be filled by rows. byrow=FALSE indicates that the ...
View QuestionAll columns in a matrix must have the same mode and the _________ length.
a) Different b) Same c) May be the same d) May be different Answer: b
View Question
Find the following type of vector?
a <- c(1,2,5.3,6,-2,4)
Find the following type of vector? a <- c(1,2,5.3,6,-2,4) a) Numeric b) Character c) Integer d) Logical Answer: a Explanation: The ...
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