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## Credits

NSS College of Engineering (NSSCE), Palakkad
Chandana P Dev has created this Calculator and 400+ more calculators!
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## Standard Deviation when Probability Factor is Given Solution

STEP 0: Pre-Calculation Summary
Formula Used
standard_deviation = (Scheduled time-Mean time)/Probability factor
σ = (Ts-te)/Z
This formula uses 3 Variables
Variables Used
Scheduled time - Scheduled time is the time which is made as per the experience and practice by the creator of project. (Measured in Day)
Mean time - Mean time, also called as expected time is the time needed to complete an activity. (Measured in Day)
Probability factor- Probability factor is a term used to find the probability of a project to get completed in expected time.
STEP 1: Convert Input(s) to Base Unit
Scheduled time: 20 Day --> 1728000 Second (Check conversion here)
Mean time: 20 Day --> 1728000 Second (Check conversion here)
Probability factor: 0.3 --> No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
σ = (Ts-te)/Z --> (1728000-1728000)/0.3
Evaluating ... ...
σ = 0
STEP 3: Convert Result to Output's Unit
0 --> No Conversion Required
0 <-- Standard Deviation
(Calculation completed in 00.015 seconds)

## < 6 Other formulas that you can solve using the same Inputs

Optimistic Time when Expected Time is Known
optimistic_time = (6*Mean time)-(4*Most likely time)-Pessimistic time Go
Most Likely Time when Expected Time is Known
most_likely_time = (6*Mean time-Optimistic time-Pessimistic time)/4 Go
Scheduled Time when Probability Factor is Known
scheduled_time = (Standard Deviation*Probability factor)+Mean time Go
Expected Time when Probability Factor is Known
mean_time = Scheduled time-(Standard Deviation*Probability factor) Go
Probability Factor
probability_factor = (Scheduled time-Mean time)/Standard Deviation Go
Pessimistic Time when Expected Time is Known
pessimistic_time = 6*Mean time-Optimistic time-4*Most likely time Go

## < 11 Other formulas that calculate the same Output

Standard deviation of hypergeometric distribution
standard_deviation = sqrt((Number of items in sample*Number of success*(Number of items in population-Number of success)*(Number of items in population-Number of items in sample))/((Number of items in population^2)*(Number of items in population-1))) Go
Standard deviation of binomial distribution
standard_deviation = sqrt((Number of trials)*(Probability of Success)*(1-Probability of Success)) Go
Standard deviation of negative binomial distribution
standard_deviation = sqrt((Number of success*Probability of Failure )/(Probability of Success)) Go
Sample standard deviation
standard_deviation = sqrt((sum of difference btw ith term and sample mean^2)/(Number of elements in population-1)) Go
population standard deviation
standard_deviation = sqrt((sum of difference btw ith term and sample mean^2)/Number of elements in population) Go
Standard Deviation used for Survey Errors
standard_deviation = sqrt(Sum of square of residual variation/(Number of observations-1)) Go
Standard deviation of geometric distribution
standard_deviation = sqrt(Probability of Failure /(Probability of Success^2)) Go
Standard deviation Using Z-score
standard_deviation = (Value of A-Mean of data)/Z-score Go
Standard Deviation
standard_deviation = (Pessimistic time-Optimistic time)/6 Go
Standard deviation of poisson distribution
standard_deviation = sqrt(Mean of data) Go
Standard Deviation Of Data
standard_deviation = (Variance)^2 Go

### Standard Deviation when Probability Factor is Given Formula

standard_deviation = (Scheduled time-Mean time)/Probability factor
σ = (Ts-te)/Z

## What is Probability of Occurrence of an Event?

The probability of a project to complete at expected time is 50% and this probability increases or decreases according to the increase or decrease on scheduled time. Since the probability distribution of the entire project is in normal distribution, the probability can be determined using probability factor. If the factor is 0, probability of completing project at expected time is 50%

## How to Calculate Standard Deviation when Probability Factor is Given?

Standard Deviation when Probability Factor is Given calculator uses standard_deviation = (Scheduled time-Mean time)/Probability factor to calculate the Standard Deviation, The Standard Deviation when Probability Factor is Given represents the measurement of uncertainty in occurring an event. . Standard Deviation and is denoted by σ symbol.

How to calculate Standard Deviation when Probability Factor is Given using this online calculator? To use this online calculator for Standard Deviation when Probability Factor is Given, enter Scheduled time (Ts), Mean time (te) and Probability factor (Z) and hit the calculate button. Here is how the Standard Deviation when Probability Factor is Given calculation can be explained with given input values -> 0 = (1728000-1728000)/0.3.

### FAQ

What is Standard Deviation when Probability Factor is Given?
The Standard Deviation when Probability Factor is Given represents the measurement of uncertainty in occurring an event. and is represented as σ = (Ts-te)/Z or standard_deviation = (Scheduled time-Mean time)/Probability factor. Scheduled time is the time which is made as per the experience and practice by the creator of project. , Mean time, also called as expected time is the time needed to complete an activity and Probability factor is a term used to find the probability of a project to get completed in expected time. .
How to calculate Standard Deviation when Probability Factor is Given?
The Standard Deviation when Probability Factor is Given represents the measurement of uncertainty in occurring an event. is calculated using standard_deviation = (Scheduled time-Mean time)/Probability factor. To calculate Standard Deviation when Probability Factor is Given, you need Scheduled time (Ts), Mean time (te) and Probability factor (Z). With our tool, you need to enter the respective value for Scheduled time, Mean time and Probability factor 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 Standard Deviation?
In this formula, Standard Deviation uses Scheduled time, Mean time and Probability factor. We can use 11 other way(s) to calculate the same, which is/are as follows -
• standard_deviation = (Pessimistic time-Optimistic time)/6
• standard_deviation = (Variance)^2
• standard_deviation = (Value of A-Mean of data)/Z-score
• standard_deviation = sqrt((Number of trials)*(Probability of Success)*(1-Probability of Success))
• standard_deviation = sqrt((Number of success*Probability of Failure )/(Probability of Success))
• standard_deviation = sqrt(Probability of Failure /(Probability of Success^2))
• standard_deviation = sqrt((Number of items in sample*Number of success*(Number of items in population-Number of success)*(Number of items in population-Number of items in sample))/((Number of items in population^2)*(Number of items in population-1)))
• standard_deviation = sqrt(Mean of data)
• standard_deviation = sqrt((sum of difference btw ith term and sample mean^2)/Number of elements in population)
• standard_deviation = sqrt((sum of difference btw ith term and sample mean^2)/(Number of elements in population-1))
• standard_deviation = sqrt(Sum of square of residual variation/(Number of observations-1))
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