[{'role': 'system', 'content': "You are an expert in machine learning and your task is to classify the code snippets into categories from the provided list of categories. List of categories: ['helper_functions', 'load_data', 'data_exploration', 'data_preprocessing', 'evaluation', 'modelling', 'prediction', 'result_visualization', 'save_results', 'comment_only']"}, {'role': 'user', 'content': "Identify to which category the provided code belongs and assign the code snippet to at least 1 but up to 5 categories based on the probabilities, ignore if the probability of the category is negligible. Strictly provide your response as a list. Avoid providing any additional information, commentary, or personal opinions.\\nPython Code:active_titles = popularity.index[popularity > 100]\nAvgOfRatAbv = AvgOfRat.ix[active_titles]\nplt.hist(AvgOfRatAbv, bins=20, color='green')\nplt.title('Histogram of the average rating for movies with more than 100 rating times', fontsize=9)\nplt.xlabel('Average rating')\nplt.ylabel('Frequency')\nplt.axis([1.0, 5.0, 0, 250])\nplt.grid(True)\nplt.show()"}, {'role': 'assistant', 'content': "['data_exploration']"}]