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Coursework Assignment - 5CCM242A/6CCM242B
This document details the content of the Coursework Assignment that you will need to submit on the KEATS
page of the module by 4pm on April 5th, 2022. Please submit up to 2 (two) A4 pages (not including
the department coversheet) in .pdf/.docx or equivalent formats with minimum font size of
12pt. This must include figures and R code whenever required. If your submission includes more than two
pages, only the first two pages of your submission will be marked.
Your submission must be anonymous. Your submission will be marked on a scale up to 100 with the
marking scheme below and it will contribute 20% of the final mark for the module.
The datasets to be used in the exercises below can be found on the KEATS page of the module in the
Coursework section.
Exercise 1
The file Darts.csv contains data on 91 Archaic dart points recovered during surface surveys at Fort Hood,
Texas. This dataset has been extracted from the R package archdata. It contains the following variables:
• Name. Dart point type: Darl, Ensor, Pedernales, Travis, Wells
• Length. Maximum Length (mm)
• Width. Maximum Width (mm)
• Thickness. Maxmimum Thickness (mm)
• Weight. Weight (g).
(a) Using an appropriate model selection strategy and variables transformation if necessary, choose and fit
the the best model for the variable Weight. This includes checking the model assumptions and fixing
obvious issues. Comment on potential issues that you were not able to fix (if any). [40 Marks]
(b) Obtain a 90% prediction interval for a new observation of Weight for a Dart of type Pedernales with
Length = 50, Width = 20 and Thickness = 6. [15 Marks]