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In Pandas, which method is used to fill missing values in a DataFrame with specified values or a filling method?
In Pandas, what method is used to remove duplicate rows from a DataFrame based on specified columns?
In Pandas, which method is used to sort a DataFrame by the values in one or more columns in ascending or descending order?
What Python function is used to read a CSV (Comma-Separated Values) file into a Pandas DataFrame?
What Python function is used to create a new column in a Pandas DataFrame based on the values of existing columns?
In Pandas, what method is used to calculate summary statistics for numerical columns in a DataFrame?
In Pandas, which method is used to pivot data from long to wide format, creating a new DataFrame?
In Pandas, which method is used to apply a custom function to each element of a DataFrame or Series?
In Pandas, what method is used to calculate the mean, median, and other summary statistics for numerical columns in a DataFrame?
In Pandas, which method is used to calculate the mode of a numerical column in a DataFrame?