Processing data includes subsetting, formatting and merging only.
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Data Science · all questionsData Collection and Preprocessing
Data Collection and Preprocessing
practice.
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105
Questions
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Point out the correct statement.
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Which of the following function gives information about top level data?
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Which of the following is an important parameter of read.table function?
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Data that summarize all observations in a category are called . . . . . . . . data.
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Point out the correct statement.
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Which of the following is an example of raw data?
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Which of the following package is used for reading GIS data?
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Which of the following package is used for reading excel data?
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Raw data in the real-world is tidy and properly formatted.
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Which of the following function is used for casting data frames?
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Extracting XML is the basis for most web scraping.
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Which of the following join is by default used in plyr package?
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Which of the following package is used for reading JSON data?
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Which of the following is another name for raw data?
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Which of the following metacharacter is used to refer to any character?
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Which of the following function is used for determining missing values?
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Which of the following is a trait of tidy data?
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Point out the wrong statement.
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Q100
Open questionWhich of the following transforms can be performed with data value?
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