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Pandas Chapter 1-3 Quiz: Data Import and Manipulation
10 Questions
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Pandas Chapter 1-3 Quiz: Data Import and Manipulation

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Questions and Answers

What is the Pandas instance method used to import a CSV data file?

  • open_xls()
  • open_csv()
  • read_xls()
  • read_csv() (correct)

    • In the Iris dataset, what function is needed to replace a string in the 'species' column?

  • species.replace()
  • species.replace()
  • species.str.replace() (correct)
  • species.col.replace()

    • To find the median value in a column labeled 'genus' in a DataFrame 'df', what is the correct function to use?

  • groupby('genus').median() (correct)
  • group('genus').median()
  • median.groupby('genus')
  • median.('genus').groupby()

    • Which function in Pandas allows passing multiple functions at once?

    <p>conc()</p> Signup and view all the answers

    What does the LabelBinarizer() function do?

    <p>It converts multiple categorical columns to binary values and transforms the data</p> Signup and view all the answers

    What is the correct way to fill missing values with the number 5 in a Pandas DataFrame 'df'?

    <p>df.fillna(5)</p> Signup and view all the answers

    How do you specify the number of data points to evaluate (K - Hyperparameter) in the K-Nearest-Neighbor algorithm?

    <p>n_neighbors=5</p> Signup and view all the answers

    What is the purpose of the following function: ¥%matplotlib inline?

    <p>It allows the graphs to be included in your notebook next to the code cell</p> Signup and view all the answers

    When applying the K-Nearest-Neighbor algorithm, what is the correct way to fit and predict the dataset?

    <p>knn = knn.fit(X_data, y_data) and y_pred = knn.predict(X_data)</p> Signup and view all the answers

    What is the standard data missing marker used in Pandas?

    <p>(Not given in options)</p> Signup and view all the answers

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