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Pessimistic Time when Expected Time is Known Solution

STEP 0: Pre-Calculation Summary
Formula Used
pessimistic_time = 6*Mean time-Optimistic time-4*Most likely time
tp = 6*te-t0-4*tm
This formula uses 3 Variables
Variables Used
Mean time - Mean time, also called as expected time is the time needed to complete an activity. (Measured in Day)
Optimistic time - Optimistic time is the shortest possible time to complete the activity if all goes well. (Measured in Day)
Most likely time - Most likely time is the normal time activity would take. (Measured in Day)
STEP 1: Convert Input(s) to Base Unit
Mean time: 20 Day --> 1728000 Second (Check conversion here)
Optimistic time: 120 Day --> 10368000 Second (Check conversion here)
Most likely time: 180 Day --> 15552000 Second (Check conversion here)
STEP 2: Evaluate Formula
Substituting Input Values in Formula
tp = 6*te-t0-4*tm --> 6*1728000-10368000-4*15552000
Evaluating ... ...
tp = -62208000
STEP 3: Convert Result to Output's Unit
-62208000 Second -->-720 Day (Check conversion here)
FINAL ANSWER
-720 Day <-- Pessimistic time
(Calculation completed in 00.032 seconds)

11 Other formulas that you can solve using the same Inputs

PERT expected time
pert_expected_time = (Optimistic time+(4*Most likely time)+Pessimistic time)/6 Go
Optimistic Time when Expected Time is Known
optimistic_time = (6*Mean time)-(4*Most likely time)-Pessimistic time Go
Mean or Expected Time
mean_time = (Optimistic time+(4*Most likely time)+Pessimistic time)/6 Go
Most Likely Time when Expected Time is Known
most_likely_time = (6*Mean time-Optimistic time-Pessimistic time)/4 Go
Standard Deviation when Probability Factor is Given
standard_deviation = (Scheduled time-Mean time)/Probability factor Go
Scheduled Time when Probability Factor is Known
scheduled_time = (Standard Deviation*Probability factor)+Mean time Go
Probability Factor
probability_factor = (Scheduled time-Mean time)/Standard Deviation Go
Standard Deviation of an Activity
standard_deviation = (Pessimistic time-Optimistic time)/6 Go
Standard Deviation
standard_deviation = (Pessimistic time-Optimistic time)/6 Go
Pessimistic Time when Standard Deviation is Known
pessimistic_time = 6*Standard Deviation+Optimistic time Go
Variance
variance = ((Pessimistic time-Optimistic time)/6)^2 Go

1 Other formulas that calculate the same Output

Pessimistic Time when Standard Deviation is Known
pessimistic_time = 6*Standard Deviation+Optimistic time Go

Pessimistic Time when Expected Time is Known Formula

pessimistic_time = 6*Mean time-Optimistic time-4*Most likely time
tp = 6*te-t0-4*tm

What is PERT ?

PERT stands for project evaluation review technique. It involves uncertainty in the project completion. It is a numerical technique used in projects where the time cannot be accurately estimated.

How to Calculate Pessimistic Time when Expected Time is Known?

Pessimistic Time when Expected Time is Known calculator uses pessimistic_time = 6*Mean time-Optimistic time-4*Most likely time to calculate the Pessimistic time, The Pessimistic Time when Expected Time is Known is the maximum time required to complete an activity under worst conditions. Pessimistic time and is denoted by tp symbol.

How to calculate Pessimistic Time when Expected Time is Known using this online calculator? To use this online calculator for Pessimistic Time when Expected Time is Known, enter Mean time (te), Optimistic time (t0) and Most likely time (tm) and hit the calculate button. Here is how the Pessimistic Time when Expected Time is Known calculation can be explained with given input values -> -720 = 6*1728000-10368000-4*15552000.

FAQ

What is Pessimistic Time when Expected Time is Known?
The Pessimistic Time when Expected Time is Known is the maximum time required to complete an activity under worst conditions and is represented as tp = 6*te-t0-4*tm or pessimistic_time = 6*Mean time-Optimistic time-4*Most likely time. Mean time, also called as expected time is the time needed to complete an activity, Optimistic time is the shortest possible time to complete the activity if all goes well and Most likely time is the normal time activity would take.
How to calculate Pessimistic Time when Expected Time is Known?
The Pessimistic Time when Expected Time is Known is the maximum time required to complete an activity under worst conditions is calculated using pessimistic_time = 6*Mean time-Optimistic time-4*Most likely time. To calculate Pessimistic Time when Expected Time is Known, you need Mean time (te), Optimistic time (t0) and Most likely time (tm). With our tool, you need to enter the respective value for Mean time, Optimistic time and Most likely time and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
How many ways are there to calculate Pessimistic time?
In this formula, Pessimistic time uses Mean time, Optimistic time and Most likely time. We can use 1 other way(s) to calculate the same, which is/are as follows -
  • pessimistic_time = 6*Standard Deviation+Optimistic time
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