代写158.739-2025 Semester 1 Assessment 3 and Assessment 4代写Python编程

158.739-2025 Semester 1

Assessment 3 and Assessment 4

Deadline:	Hand in by midnight May 25 2025
Project 3 Evaluation	100 marks (15% of your final course grade).
Project 4 Evaluation	100 marks (50% of your final course grade).
Work	This assignment may be done in pairs. If you are doing this project with someone else, state this clearly in your submission, together with a document that clearly specifies which tasks each person completed in the project.
Purpose:	Re-enforce and build on data wrangling skills learned so far. Learn how to implement the full process of data acquisition, data wrangling, data integration, data persistence   using SQLite, and data analysis using Python.

Assessment 3 and 4 overarching outline:

The goal of these projects is the implementation of a full data analysis workflow using python with the combination of SQLite database persistence.

You are asked to preferably choose a problem domain that is aligned with your specialisation within the Master of

Analytics (if relevant); otherwise, select a domain of interest to you. You may re-use some of the datasets from the

previous assignment.  Research what kinds of data sources are available for your selected domain. Subsequently, you are  asked to (1) formulate questions that you would like answered, (2) acquire datasets from at least two different sources (at least one source must be dynamic, i.e. is web-scraped or is retrieved from a web API), (3) wrangle the data into an usable format and perform. EDA, (4) integrate datasets into one, (5) persist the data into a SQLite relational database with a suitable schema, (6) perform. group-by queries, pivot tables, cross-tabulation of the data to answer your research questions, together with a rich set of visualisations.

Links to various dataset and web API repositories are provided on Stream. The analysis workflow you are asked to perform. is illustrated in the diagram below:

Assessment 4 Requirements:

Your research report must be in a Jupyter Notebook format and thus executable and repeatable. Clearly introduce your problem domain, articulate your research questions and provide an executive summary at the beginning. Follow the provided Jupyter notebook template.

You must document and explain the reasoning behind the coding steps you are taking and provide explanations of all your graphs and tables as is appropriate. Make sure you label all aspects of your graphs.

The activities listed under the five stages in the workflow diagram above are a guide only. This means that operations like group-by statements as well as pivot tables could be a part of the ‘Data Wrangling’ phase as EDA, and not only a part of the data analysis phase. Finally, please run your report through an external spell checker and feel free to use ChatGPT judiciously to help you as discussed in class.

Assessment 4 Marking criteria:

Marks will be awarded for different components of the project using the following rubric:

Component	Marks	Requirements and expectations
Data Acquisition	20	• Diversity of sources (at least one must be dynamic – full marks for using both APIs and web scraping – penalties will be applied for re-using examples from class) • Appropriate use of merging and concatenation.
Data Wrangling and EDA	30	• Quality of your EDA • Appropriate and effective use of visualisations • Thoroughness in data cleaning • Use of user-defined functions • Tidiness of the code
Data Analysis	35	• Quality of the research questions being asked • Diversity of techniques used to answer the research questions and present them to the readers • Clear and structured presentation of findings • Rich interpretation and communication of findings and visualisations
Originality and challenge	15	• Originality in the problem definition and approach to the analysis • Creativity in problem solving • The degree of challenge undertaken
BONUS
Big Data Processing Techniques	5	• Demonstration of out-of-core processing • Analysis of query performance issues and optimisations where necessary

Assessment 3 Specific Requirements:

Once you have completed the above components, your task now is to design a database (DB) schema that represents all the data that you have acquired from multiple sources in a normalised form, and to populate it using SQLite, thus achieving full data persistence.

The project requirements are as follows:

-      create a separate Jupyter Notebook for these tasks

-      create a simple DB schema document that shows the tables (aim for around halfa dozen), their attributes and relationships that depict your design; use free software like DBSchema (https://dbschema.com/) to create a diagram and embed this image into the notebook

-      create an image file from the schema DB design document and embed it into your notebook

-      describe your DB schema at a high level

-     write all the database schema code for creating the necessary tables for SQLite DBs

-     read in all the data that you have prepared in the above project and which you have stored in various file formats (.csv and/or .xlsx) and populate your tables from the notebook

-     perform some analysis that requires extracting data from your DB; write at least six queries that require various table joins on your DB; these queries can replicate or be based on some of the analysis that you performed in the above project. You may also include some visualisations in the notebook.

-      create at least two DB Views which encapsulated queries from above and test them

Assessment 3 Marking criteria:

Marks will be awarded for different components of the project using the following rubric:

Component	Marks	Requirements and expectations
Schema Definition	35	• design of a DB schema document and its explanation • creating half a dozen normalised tables that capture all the data • use of correct data types for attributes • definition of primary and foreign keys where appropriate • definition of indexes where appropriate • definition, implementation and explanation of constraints where necessary
DB Population	20	• automation of reading files from flat-files and writing data into SQLite tables • performing checking that the data has been persisted in the SQLite DB

SQLite Queries	35	• complexity of queries (these should be much more than simple SELECT statements) • diversity of queries • readability and structure of the SQL code • explanation of the queries and results
DB Views	10	• creation of two DB Views • testing out the views

Hand-in: Submit only 2 notebooks (you may submit additional .py files though) and make sure you convert them into a PDF format also just in case we cannot open your notebooks. Zipped up all the files together with your final datasets and the SQLite database, via the Stream assignment submission link. Include also your AI use statement. Please do not email your submission to the teaching staff.

Use of Generative AI in This Assignment

For this project, you are required to independently select, wrangle, analyze, and interpret a range of datasets of your choosing.  The  use of generative AI is restricted to planning, explanation, and concept development only as in the previous assignments. You are also expected to design and implement a simple relational database schema in SQLite that reflects your  project  data structure  as  part  of assignment  3  requirements.  While  relational  database design  is  not  a primary focus  of this course, you  may  in  this  component consult generative AI tools to  assist you  in  understanding, planning, and refining your database design. However, you must remain the primary author of all schema definitions, queries, and code.

Allowed Uses of AI for assignments 3 and 4

You may use AI tools along the lines of the following prompts to support your understanding and design decisions:

Schema Planning and Data Modeling:

-      “What is database normalization, and why is it important in designing relational schemas?”

-      “Can you explain the difference between a foreign key and a primary key, with examples?”

-      “I have a dataset with student grades and course enrolments. How might I structure this in third normal form?”

-      “What are some common mistakes in designing many-to-many relationships in relational databases?”

Entity Relationship Design Feedback

-      “I’m  considering one table for  users  and another for transactions. Should  I separate addresses  into another table or not?”

-      “Does this table  design satisfy 3NF: [insert table structure here]?”  (BTW – you are not required to normalize data to this extent – only for those interested)

Data Type and Constraint Choices

-      “What data types are appropriate for representing timestamps and currency in SQLite?”

-      “Should I add a uniqueness constraint to this field if I want each record to have a distinct email?”

Debugging and Troubleshooting

-      “SQLite is giving me a syntax error when creating a foreign key. What might be wrong?”

-      “Why is my foreign key not enforcing integrity between these two tables?”

Prohibited Uses of AI for assignment 3 and 4

You must NOT:

•     Copy AI-generated code directly into your submission.

•     Input the assignment questions directly into AI and use its responses as your own.

•     Ask AI to interpret your figures and raw findings for you.

•     Paraphrase AI-generated explanations/code and present them as original work.

•     Ask AI to write step-by-step solutions to any of the assignment tasks.

•     Copy and paste AI-generated database schema code or SQL queries directly into your submission.

•     Ask AI to fully generate your schema or normalization steps for you.

•     Ask AI to write the database creation, table population, or view creation code.

•     Use AI to explain your SQL outputs or results in your notebook.

•     Ask AI to produce your final documentation or schema explanations.