Chapter 7

in the CMP diagram what does ES and EF mean?

Early Start- what is the earliest you could start working on this task Early Finish- what is the earliest you could be finished?

what is the slack formula?

LS-ES or LF-EF

Program Evaluation and Review Technique, a project management methodology developed by the US Navy.

PERT

a document specifying the tasks required to finish a project.

WBS (work breakdown structure)

how do you find the mean and variance for a specific path using Pert analysis?

add up the calculated duration and variances for each part

what is the fastest way to determine a critical path?

all the tasks with matching early and late timings

how do you find the probability of completing a path before a project deadline?

calculate the Z score z = (deadline - path mean)/path standard deviation)---> then look up on Z table

Expediting the completion of a task or group of tasks, to finish a project sooner.

crashing

The longest path through a project network; determines the length of the entire project.

critical path

tasks with zero slack=

critical path

what is the early start time rule?

early start time of task= largest of the early finish times of its immediate predecessors

A task that must be completed before another task can start.

immediate predecessor

what is the Late Finish Time Rule?

late finish (LF) time of a task= smallest of the Late Start (LS) times of its immediate followers

how do you calculate joint probability?

multiply each path probability together

Any sequence of linked activities that connect the beginning with the end of a project network.

path

Variable or not well known in advance; subject to randomness. This represents uncertainty in planning.

probabilistic

A unique collection of activities creating a particular outcome.

project

The degree to which a task may be delayed from its early start without delaying the project.

slack

A normal distribution with a mean of zero and a variance of 1.

standard normal distribution

what do you do differently if you are asked the probability of something NOT finishing in a certain number of days?

subtracted the probability from one.

wha is the purpose of Late Start (LS) and Late Finish (LF)?

to determine what is the latest you can delay starting or finishing a task

A style of project network diagram in which arrows represent tasks and their connections with nodes represent precedence relationships. The arrows represent the activities and nodes represent the events.

AOA

A style of project network diagram in which nodes represent tasks and the connecting pathways represent precedence relationships.

AON

a project management methodology developed by DuPont Corporation.

CPM- Critical Path Method,

The observation that sample values approximate a normal distribution, regardless of the underlying distribution of the population being sampled.

Central Limit Theorem

EF=?

ES + task time

A scheduling diagram that illustrates activities across a horizontal time line.

Gantt chart

LS=?

LF-task time

how do you approach doing late time and late start projects?

work backwards and calculate the last project by taking LS= LF-task time (LF= finish day) next find immediate predecessors and make their LS the new LF so on and so forth