a) XLConnect package has more options for manipulating access files b) XLConnect vignette package can also be used ...
View QuestionWhich of the following function is used for loading flat files?
a) read.data b) read.sheet c) read.table d) none of the mentioned Answer: c Explanation: This reads data ...
View QuestionRaw data in the real-world is tidy and properly formatted.
a) True b) False Answer: a Explanation: Data analysis is not a goal in itself; the goal ...
View Questiontidyr is a reframing of _______ designed to accompany the tidy data framework.
a) reshape5 b) dplyr c) reshape2 d) all of the mentioned Answer: c Explanation: tidyr does less ...
View QuestionWhich of the following is the most common problem with messy data?
a) Column headers are values b) Variables are stored in both rows and columns c) A single observational ...
View QuestionStrange binary file generated from machines is an example of tidy data.
a) True b) False Answer: b Explanation: Data sets stored in spreadsheets, such as Microsoft’s Excel, are ...
View QuestionWhich of the following process involves structuring datasets to facilitate analysis?
a) Data tidying b) Data mining c) Data booting d) All of the mentioned Answer: a Explanation: ...
View QuestionPoint out the wrong statement.
a) Tidy datasets are all alike but every messy dataset is messy in its own way b) Most ...
View QuestionWhich of the following package is used for tidy data?
a) tidyr b) souryr c) NumPy d) all of the mentioned Answer: a Explanation: tidyr is used ...
View QuestionWhich of the following is a trait of tidy data?
a) each variable in one column b) each observation in different row c) one table for each kind ...
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