What is the average fluctuation (i.e., difference) between the closing (Close) and opening (Open) prices? What is the standard deviation of the fluctuations (i.e., difference) between the closing (Close) and opening (Open) prices? Hints: Create a new column as the difference between opening costs (Open) and closing costs (Close). All you need to do is to select these columns in the dataset and take the difference using the minus - sign. Name this column as diff You can compute the average and standard deviation of this new column using the mean() and std() functions. Check Module 3d: Descriptive Statistics