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Flashcards in Estimating project work (Ana) Deck (13):
1

Problem with software projects?

1. over budget
2. over time

1. not meeting requirements
2.

2

estimate?

guess, forecast, calculation of the most likely effort/money needed to complete a project, based on information

3

estimation approaches?

Top down


Bottom-up

4

Alternative terminology?

1. Algoritmic models

2. expert judgement

5

Algoritmic models?

Constructive cost Model (COCOMO)

Based on historical project data and current project characteristics such as product personel etc.

Effort=a*Sb*EAF

a= based on the project type
S=size in lines of code, function points
EAF=

6

Expert judgement?

1. Individual
- ad hoc
- company templates

2. Group
- planning poker
- widebanddelphi

7

planning poker?

- uses Fibonacci sequence reflects the inherent uncertainty in estimating larger items

why does it work?
- decision about time estimation is individual
- if consensual —> decision

8

wisdom of crowds?

decisions often better than if made by single members of the group

Better estimation if:
- diversity
- independency
- decentralization
- aggregation

9

most common for Swedish companies with regards to estimation?

Expert judgement

10

Research in cost estimation methods?

not very often tested practice in real organizations

11

why we keep failing with cost estimate?

1. practitioners ability to estimate effect does not seem to improve

2. The knowledge provided by the researchers

3. The importance of asking questions

12

practicers point of view?

1. changes in requirements
2.

13

cognitive estimation biased?

optimism
wishfil thinking