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Pandas Chapter 1-3 Quiz: Data Import and Manipulation

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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?

conc() (A) Signup and view all the answers

What does the LabelBinarizer() function do?

It converts multiple categorical columns to binary values and transforms the data (C) Signup and view all the answers

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

df.fillna(5) (D) 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?

n_neighbors=5 (A) Signup and view all the answers

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

It allows the graphs to be included in your notebook next to the code cell (D) Signup and view all the answers

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

knn = knn.fit(X_data, y_data) and y_pred = knn.predict(X_data) (B) Signup and view all the answers

What is the standard data missing marker used in Pandas?

(Not given in options) (C) Signup and view all the answers