Effort Estimation Exercise

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1. The size (that is, the effort needed to complete it) of any task will depend on its characteristics. The units into which the work is divided will also differ. Identify the factors affecting the size of the task and the work units for the following activities:
• installing computer workstations in a new office
• transporting assembled personal computers from the factory where they were assembled to warehouses distributed in different parts of the country
• typing in and checking the correctness of data that is populating a new data base
• System testing a newly written software application
(10 Marks)

2. If you were asked as an expert to provide an estimate of the effort needed to make certain changes to an existing piece of software, what information would you like to have to hand to assist you in making that estimate? (2Marks)

3. A small application maintains a telephone directory. The database for the application contains the following data types:

Staff reference
Surname
Forenames
Title
Department code
Room number
Telephone extension
E-mail address
Fax number

Transactions are needed which:
i) set up new entries;
ii) amend existing entries
iii) delete entries
iv) allow enquirers to list on line the details for a particular member of staff
v) produce a complete listing of the telephone directory entries in alphabetical order

a) Use this scenario to produce an estimated Mark II FP count. List all the assumptions you will need to make. (10 Marks)

b) Another requirement could be to produce the listing in (v) in departmental order. In your view should this increase FP count and if so by how much? (2 Marks)

4. The following details are held about previously developed software modules.

module inputs entity types accessed outputs days
a 1 2 10 2.60
b 10 2 1 3.90
c 5 1 1 1.83
d 2 3 11 3.50
e 1 3 20 4.30
A new module has 7 inputs, one entity type access and 7 outputs. Which of the modules a to e is the closest analogy in terms of Euclidean distance? (3 Marks)

5. Using the data in further exercise 4 above, calculate the Simons Mark II FPs for each module. Using the results, calculate the effort needed for the new module described in exercise 4. How does this estimate compare to the one based on analogy? (13 Marks)
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Sample Solution

National Youth Screening and Assessment Project, may also be available to support implementation. c. DJS should consider amending its practice of screening all youth who appear at the BCJJC for detention admission using the Detention Risk Assessment Instrument, even youth who will ultimately be diverted prior to DJS referral through the BPD Diversion Program. This will limit young people’s exposure to the detrimental impact and collateral consequences associated with generating unnecessary DJS and court records. d. BPD should develop a training and messaging strategy to increase officer knowledge and understanding of new policies and protocols for interacting with youth, the purpose of the juvenile court system, details of juvenile justice process, and the purpose of secure detention. Clear and consistent messaging for officers will help to mitigate the obdurate frustration that officers reportedly experience when they perceive that young people are not being held accountable by the system. e. Conduct a case processing analysis of adult-charged youth in detention to identify why time spent in detention for these youth has doubled from 2014 to 2018 and develop policies and programs to address the causes of delays. 2. Programs and Conditions a. The City should partner closely with DJS and the Baltimore JDAI Oversight Board to assess the continuum of Secure Detention Alternative established by DJS and the extent to which it meets existing needs. b. The City and its appropriate offices and agencies should partner with DJS to identify additional programs for youth in detention, in particular youth charged as adults, that can help young people build skills and connections that will help them succeed following release and return to their communities. c. To the extent that there are gaps in the existing Secure Detention Alternatives Continuum, the City and DJS should partner closely to identify resources to enhance the Alternative Continuum. As a resource, stakeholders should consult the results of the Youth Service Provider Survey conducted as part of this assessment. 3. Community Engagement and Partnerships

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