QUESTION 12 Given a pandas dataframe df, you want to find out the size of each dimension. Which of the following produces what you need? Odf.ndim df describe) df.shape df.columns QUESTION 14 Which shell command allows you to check if the file a.csv contains column header as its first line? O is - a.csv head a.csv WC a.csv tail a.csv QUESTION 15 Which states about data profiling are true? (choose all that apply) Data profiling identifies data type of each attribute Data profiling is mainly an academic exercise, no commercial tool is available to support data profiling tasks. Data profiling generates insights about relationship between attributes Data profiling can help identify quality issues (e.g., outliers) in data