Hello guys,
Today we will talk about how to create estimates quickly to projects.
The article is divided into two the first post refers to how estimates of a simpler way, but it is possible to have good visibility from within your project.
The second post PERT analysis is used to obtain a more advanced estimate. The step by step simple estimate will be used in more complex estimated.
Let's use an excel spreadsheet to reference this post to download the spreadsheet.
Walkthrough
1 Divide the problem into parts
I usually always when I speak estimation using a metaphor that is building a home. If you ask a Mason how long it takes to build a house of eight rooms and a bathroom.
For more experienced he is the answer will contain a very high level of inaccuracy. Now ask yourself the same mason how long it takes to build a wall the answer will be far more accurate.
Works projects in the same way, achieving break all the activities into small pieces the size of building a wall, we will have a degree of accuracy far higher estimate.
So the first tip is to break the task-level activities. In our reference spreadsheet is column B (job description) description of tasks. Fill this column with their activities. At first list all the activities without being bothered with the estimates.
The "C", "D" and "E" column will be reserved for efforts to accomplish the task.
2 Estimate the time in three scenarios, optimistic, pessimistic and most likely.
The optimistic scenario is that if all goes well this will run.
The most likely scenario is one in which performing this task has a number of times the same time.
The pessimistic scenario is one where the risks, problems occur the task will be performed at this time.
In this case the advantage is that the end, when you drill the estimate of every task you have three scenarios of the development time of your project, one optimistic, the other pessimistic and most likely third. This can be seen in line 16 'total task time "of our spreadsheet reference.
3 Adding resources estimates
Now that each task was made estimates each with three scenarios is possible to do simulations added resources to the project easily.
Recalling that even when a task 16 hours by placing two actions it has been done in 4 hours. More levels to estimate we will consider that.
The simulations of the addition of xo development time features can be observed in the "Resource Estimate x" table of our reference table.
4 Create milestones tasks
The advantage of creating landmarks idea is that you have a block of related tasks the time to execute them.
The division helps in prioritization of March. In our example we will first prioritize tasks landmark masonry and soon after finishing the tasks of March.
To check how it looks in our spreadsheet to estimate landmarks look "Estimate x Marco" table of our reference table.
I hope these tips help you better mesurar the term of their projects.
God be with you and until next time.
"Everything has its season, and a time to every purpose under heaven."
Ecclesiastes 3: 1
http://gpsenior.blogspot.com.br/2013/10/como-fazer-estimativas-rapidas-em.html
Today we will talk about how to create estimates quickly to projects.
The article is divided into two the first post refers to how estimates of a simpler way, but it is possible to have good visibility from within your project.
The second post PERT analysis is used to obtain a more advanced estimate. The step by step simple estimate will be used in more complex estimated.
Let's use an excel spreadsheet to reference this post to download the spreadsheet.
Walkthrough
1 Divide the problem into parts
I usually always when I speak estimation using a metaphor that is building a home. If you ask a Mason how long it takes to build a house of eight rooms and a bathroom.
For more experienced he is the answer will contain a very high level of inaccuracy. Now ask yourself the same mason how long it takes to build a wall the answer will be far more accurate.
Works projects in the same way, achieving break all the activities into small pieces the size of building a wall, we will have a degree of accuracy far higher estimate.
So the first tip is to break the task-level activities. In our reference spreadsheet is column B (job description) description of tasks. Fill this column with their activities. At first list all the activities without being bothered with the estimates.
The "C", "D" and "E" column will be reserved for efforts to accomplish the task.
2 Estimate the time in three scenarios, optimistic, pessimistic and most likely.
The optimistic scenario is that if all goes well this will run.
The most likely scenario is one in which performing this task has a number of times the same time.
The pessimistic scenario is one where the risks, problems occur the task will be performed at this time.
In this case the advantage is that the end, when you drill the estimate of every task you have three scenarios of the development time of your project, one optimistic, the other pessimistic and most likely third. This can be seen in line 16 'total task time "of our spreadsheet reference.
3 Adding resources estimates
Now that each task was made estimates each with three scenarios is possible to do simulations added resources to the project easily.
Recalling that even when a task 16 hours by placing two actions it has been done in 4 hours. More levels to estimate we will consider that.
The simulations of the addition of xo development time features can be observed in the "Resource Estimate x" table of our reference table.
4 Create milestones tasks
The advantage of creating landmarks idea is that you have a block of related tasks the time to execute them.
The division helps in prioritization of March. In our example we will first prioritize tasks landmark masonry and soon after finishing the tasks of March.
To check how it looks in our spreadsheet to estimate landmarks look "Estimate x Marco" table of our reference table.
I hope these tips help you better mesurar the term of their projects.
God be with you and until next time.
"Everything has its season, and a time to every purpose under heaven."
Ecclesiastes 3: 1
http://gpsenior.blogspot.com.br/2013/10/como-fazer-estimativas-rapidas-em.html
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