Statistics.py

Python 3 please and thank you.

On the course Canvas, you'll find the following file(s): - Statistics.py, which is an ADT covered in class and in the readings. For your convenience, we removed some of the calculations and operations (e.g., var() and sampvar (), that were not relevant to this exercise, which would have made testing too onerous. In this question you will define four new operations for the ADT: - range() Returns the range (difference between the minimum and maximum) based on every value recorded by the Statistics object. - mode() Returns the mode (the value that occurs most frequently) based on every value recorded by the Statistics object. - max() Returns the maximum value ever recorded by the Statistics object. - min() Returns the minimum value ever recorded by the Statistics object. Note: For each of the above, if not data was seen, the function should return None. Hint: To accomplish this task, you may have to modify other operations of the Statistics ADT. You will also improve the test script from Q2 to test the new version of the ADT, and ensures that all operations are correct. Remember: you have to test all operations because you don't want to introduce errors to other operations by accident; the only way to know is to test all the operations, even the ones you didn't change. To make the marker's job easier, label your new test cases and scripts so that they are easy to find. What to Hand In - A text file named a4q3_changes .txt describes changes you made to the existing ADT operations. - A Python program named a4q3.py containing the ADT operations (new and modified). - A Python script named a4q3_testing.py containing your test script. Be sure to include your name, NSID, student number, course number and lecture section at the top of all documents. Evaluation - 1 mark: Your added operation range ( ) is correct and documented. - 1 mark: Your added operation mode () is correct and documented. - 1 mark: Your added operation max() is correct and documented. - 1 mark: Your added operation min() is correct and documented. - 3 marks: Your modifications to other operations are correct. - 5 marks: Your test script has good coverage for the new operations