Ask a Question

Which is more general than a matrix, in that different columns can have different modes?

in Education by
Which 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 I had been asked this question in an interview for internship. This intriguing question originated from Data Types topic in chapter Nuts and Bolts and Getting Data In and Out of R Programming Select the correct answer from above options

1 Answer

0 votes
by
 
Best answer
Correct answer is (c) Data sets Easy explanation: A data frame is more general than a matrix, in that different columns can have different modes (numeric, character, factor, etc). This is similar to SAS and SPSS datasets. There are many ways to identify the elements of a data frame.

Related questions

0 votes
Q: All columns in a matrix must have the same mode and the _________ length.
    All columns in a matrix must have the same mode and the _________ length. (a) Different (b) Same (c) May ... and Out of R Programming Select the correct answer from above options...
asked Feb 13, 2022 in Education by JackTerrance
0 votes
Q: ________ are similar to matrices but can have more than two dimensions.
    ________ are similar to matrices but can have more than two dimensions. (a) Functions (b) Packages (c) Arrays ... Out of R Programming Select the correct answer from above options...
asked Feb 15, 2022 in Education by JackTerrance
0 votes
Q: To bind a row onto an already existing matrix, the ______ function can be used.
    To bind a row onto an already existing matrix, the ______ function can be used. (a) Rbind (b) Sbnd (c) ... and Out of R Programming Select the correct answer from above options...
asked Feb 15, 2022 in Education by JackTerrance
0 votes
Q: A __________ is a set of elements appearing in rows and columns where the elements are of the same mode whether they are logical, numeric (integer or double), complex or character.
    A __________ is a set of elements appearing in rows and columns where the elements are of the same mode whether ... of R Programming Select the correct answer from above options...
asked Feb 13, 2022 in Education by JackTerrance
0 votes
Q: ___________ provides optional labels with the columns and rows.
    ___________ provides optional labels with the columns and rows. (a) Disnames (b) Dimnames (c) Denmes (d) ... Out of R Programming Select the correct answer from above options...
asked Feb 12, 2022 in Education by JackTerrance
0 votes
Q: Using the ________ vector, we create a species factor and bind it to the columns of iris.df.
    Using the ________ vector, we create a species factor and bind it to the columns of iris.df. (a) snames (b ... and Out of R Programming Select the correct answer from above options...
asked Feb 12, 2022 in Education by JackTerrance
0 votes
Q: R objects can have attributes, which are like ________ for the object.
    R objects can have attributes, which are like ________ for the object. (a) metadata (b) features (c) ... Out of R Programming Select the correct answer from above options...
asked Feb 15, 2022 in Education by JackTerrance
0 votes
Q: Data frames can have additional attributes such as __________
    Data frames can have additional attributes such as __________ (a) Rowname() (b) Rownames() (c) R.names() ( ... and Out of R Programming Select the correct answer from above options...
asked Feb 13, 2022 in Education by JackTerrance
0 votes
Q: What should we use to access elements with a value greater than five?
    What should we use to access elements with a value greater than five? (a) Subsetting commands (b) Use ... Out of R Programming Select the correct answer from above options...
asked Feb 15, 2022 in Education by JackTerrance
0 votes
Q: A __________ is an R-object which can contain many different types of elements inside it.
    A __________ is an R-object which can contain many different types of elements inside it. (a) Vector (b) ... Out of R Programming Select the correct answer from above options...
asked Feb 16, 2022 in Education by JackTerrance
0 votes
Q: Lists can be coerced with which function?
    Lists can be coerced with which function? (a) As.lists (b) Has.lists (c) In.lists (d) Co.lists The ... In and Out of R Programming Select the correct answer from above options...
asked Feb 15, 2022 in Education by JackTerrance
0 votes
Q: Which function can be used to determine the names assigned to a list?
    Which function can be used to determine the names assigned to a list? (a) Names (b) Name (c) Nam (d) ... In and Out of R Programming Select the correct answer from above options...
asked Feb 13, 2022 in Education by JackTerrance
0 votes
Q: Which of the following can be considered as object attribute?
    Which of the following can be considered as object attribute? (a) dimensions (b) class (c) length (d) all ... and Out of R Programming Select the correct answer from above options...
asked Feb 12, 2022 in Education by JackTerrance
0 votes
Q: Joining two lists can be achieved either using the _________ function.
    Joining two lists can be achieved either using the _________ function. (a) Concat (b) Join (c) Reduce (d) ... and Out of R Programming Select the correct answer from above options...
asked Feb 15, 2022 in Education by JackTerrance
0 votes
Q: Attributes of an object (if any) can be accessed using the ______ function.
    Attributes of an object (if any) can be accessed using the ______ function. (a) objects() (b) attrib() (c ... and Out of R Programming Select the correct answer from above options...
asked Feb 15, 2022 in Education by JackTerrance

© Copyright 2018-2023 www.Blogmepost.com. All rights reserved. Developed by Blogmepost.

...