Which of the following is NOT a common data preprocessing technique?
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Data Science · all questionsData Collection and Preprocessing
Data Collection and Preprocessing
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In data preprocessing, what is the term for the process of converting text data into numerical values?
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What is the purpose of feature engineering in data preprocessing?
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Which data collection method involves selecting a subset of individuals or elements from a larger population for study?
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In data preprocessing, what is the term for the process of handling missing data by filling in the missing values with estimates?
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Which of the following request can be issued from httr package?
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Which of the following package is used for reading HTML and XML data?
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Which of the following function is used for loading flat files?
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Which of the following package is used for tidy data?
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Which of the following function is used for searching text strings by means of regular expression?
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Which of the following function is used to read data off the webpages?
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Point out the correct statement.
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Which of the following function is used for fixing character vectors?
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Which of the following function programmatically extract parts of XML file?
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Which of the following signs are used to indicate repetition?
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Which of the following package is used to connect MySQL RDBMS with R?
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Which of the following function is good for the automatic splitting of names?
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Which type of data is generated by POS terminal in a busy supermarket each day?
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Each observation forms a column in tidy data.
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Which of the following is used to extract data from HTML code of websites?
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