CSC444 – Software Engineering – Assignment 6

Assignment: Write a program to calculate a LOC estimate and the 90 percent and 70 percent prediction intervals for this estimate.

Due: November 21, at start of lab session.

Weight: 5% of final grade.

Requirements:

• If your previous assignments 4 and 5 are of high-enough quality, you are encouraged to use them for this assignment. You’d use Assignment 4 to store the sets of data of previous estimates in a linked list, and Assignment 5’s Simpson Rule with a t distribution.
• Before you do the assignment, you should understand how to calculate prediction intervals. Section A8 of the book covers this topic. Follow the procedure stated in that section.
• Hint from the book (page 757): “Note that to calculate the value of t, you integrate from 0 to a trial value of t. You find the correct value by successively adjusting the trial value of t up or down until the p value is within an acceptable error of 0.85 (for a 70% prediction interval) or 0.95 (for a 90% prediction interval)”.
• Note that the format for input parameters and output results is left open for you. Decide how will your program receive its input and produce its output.
• You are responsible for resolving any issue not covered by these requirements. Document all your assumptions and decisions wherever requirements are unclear.

Process:

We are using the PSP1.1 process again. The forms needed for the process are pages 5, 6, 14, 16 and 17 of the file: http://www.cs.toronto.edu/~jaranda/csc444/forms.pdf

Deliverables:

Deliver the following documents and forms, in physical form, in this order:

• PSP1.1 Project Plan Summary
• Size Estimating Template
• Time Recording Log
• Defect Recording Log
• Source code printout
• Test summary, indicating how you ensured that the code is correct. Include test code printouts if you automated tests (recommended)
• No report is required this time, although you should include all assumptions taken while doing the program.

Marking scheme:

• 70% - adherence to the PSP, correct and complete use of forms
• 30% - quality of assignment code, test code (if any) and test summary