1. Forecasting techniques rely on the adage that history repeats itself. Many times, though, it has been noted that there is no guarantee that historical patterns will repeat and, even if they do, it can be difficult or impossible to predict when a pattern will repeat itself. Provide two time series examples that seemed stable and predictable until there was a significant change to the pattern. Was there a way to predict the pattern change? Explain.2. Technically, once a time series model is built, any future value can be forecasted. For example, assume you built a model that forecasts monthly sales of a product given the last 3 months of sales. Using the model, you forecasted monthly sales for the next 6 months, and the model provided very accurate predicted sales.Your manager wants to use your model to predict sales for the next 5 years. What are some problems that could occur with extending the forecast horizon out that far? How would this affect your confidence in the forecasted values for a year? Five years? Explain.

Please see attachments String Sorter Part 2Last week, you were asked to help write a program to sort medication lists. This week, we’re going to build on that.In part 2 of this assignment, you will be presented with 2 more complete programs: StringSorterV3.py and StringSorterV4.py. They both perform the same task, sorting a list of medications; however each approach is slightly different. Each of these performs the task specified in Section 1.1 and developed in Chapter 1 of the Essentials of Software Engineering text, and are further illustrated in the Python for Chapter 1 document. Testing the ProgramsYou are to first test the operation of each of these modules with the provided lists of medications to familiarize yourself with them, and to convince yourself that they work. If you discover that one or more of these implementations does not work correctly then you are to prepare a document in which you illustrate (through screen shots) and explain representative cases that fail.Modifying the ProgramsNext, you are to modify each of these implementations (V3 and V4) so that blank lines in the input are ignored in the result. Please do not change the name of the methods, but do rename your modified files by appending an ‘R’ to each filename; thus StringSorterV3.py becomes StringSorterV3R.py, etc. Along with submitting these two Python source code files, you are to prepare and submit a single document in which you illustrate (through screenshots) the execution of your revised implementations, with accompanying narrative explanations as appropriate.Additional and Optional: Improving the operation of the StringSorter implementations may be accomplished by developing a Python function to compare two strings rather than relying directly upon Python’s intrinsic operators to compare strings. Such a function could then implement its own algorithm to compare two strings interpreting lower and uppercase in a more natural way. Consider the following table that presents the strings from medications1.txt in their original order and also in the order obtained by having Microsoft Word sort them. This result is considered to be such a more natural ordering and you are to develop your algorithm to accomplish this ordering.Such a function would return true if and only if a given second string is considered to be “greater than” (i.e. appears alphabetically after) a given first string according to this algorithm. For this additional and optional part of this assignment you are to develop this function and then refactor each of the four StringSorter implementations in the corresponding Python source code files to use this function. Again, please do not change the name of the other methods, but do rename your modified files by appending a ‘AO’ to each filename; thus StringSorterV3R.py becomes StringSorterV3RAO.py, etc. Along with submitting these two Python source code files, you are to prepare and submit a document in which you illustrate (through screenshots) the execution of these refactored implementations, with accompanying narrative explanations as appropriate.SubmissionYou are to submit 3 files:If applicable, a Word Document with screenshots of cases where the program failed in your initial tests.The Source Code, StringSorterV3R.py and StringSorterV3R.pyA Word Document with screenshots of the working revisions and explanation of those revisions.If you run into any issues, please describe them, what you tried to do to fix them, and why they didn’t work.