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tbl is an extension of:
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Data Handling
tbl is an extension of:
asked
May 27, 2019
in
Data Handling
by
tempuser
tbl is an extension of:
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DataHandling-questions-answers
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answered
May 27, 2019
by
tempuser
data frame
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tbl is an extension of:
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Which function is used over the margins of an array
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Sep 3, 2019
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If x and y are two tbls, which of the following joins return all rows from x and y irrespective of matching values?
asked
May 27, 2019
in
Data Handling
by
tempuser
#datahandling
DataHandling-questions-answers
+1
vote
dplyr never prints row names since no dplyr method is guaranteed to preserve them.
asked
May 27, 2019
in
Data Handling
by
tempuser
#datahandling
DataHandling-questions-answers
+2
votes
In the mtcars dataset, how many cars provide a mileage of less than 20 mpg?
asked
May 27, 2019
in
Data Handling
by
tempuser
#datahandling
DataHandling-questions-answers
+1
vote
In the iris dataset, how many flowers havePetal.Length/Petal.Width ratio of less than 10
asked
May 27, 2019
in
Data Handling
by
tempuser
#datahandling
DataHandling-questions-answers
+1
vote
In the iris dataset, how many flowers of species setosa havePetal.Length/Petal.Width ratio of less than 10.
asked
May 27, 2019
in
Data Handling
by
tempuser
#datahandling
DataHandling-questions-answers
+1
vote
What is the average mileage of a car in the mtcars dataset
asked
May 27, 2019
in
Data Handling
by
tempuser
#datahandling
DataHandling-questions-answers
+1
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In the hflights dataset, how many flights were cancelled in the month of January 2011
asked
May 27, 2019
in
Data Handling
by
tempuser
#datahandling
DataHandling-questions-answers
+1
vote
Which of the following functions lists all columns in a dataset with few values from each column?
asked
May 27, 2019
in
Data Handling
by
tempuser
#datahandling
DataHandling-questions-answers
+1
vote
Which of the following functions does not list the total number of observations in a dataset?
asked
May 27, 2019
in
Data Handling
by
tempuser
#datahandling
DataHandling-questions-answers
+1
vote
Which of the following functions can be used to find the number or rows and columns in a dataset?
asked
May 27, 2019
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Data Handling
by
tempuser
#datahandling
DataHandling-questions-answers
+1
vote
dplyr is useful for:
asked
May 27, 2019
in
Data Handling
by
tempuser
#datahandling
DataHandling-questions-answers
+2
votes
Which command can be used to import text files in R
asked
May 27, 2019
in
Data Handling
by
tempuser
#datahandling
DataHandling-questions-answers
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