Standard Deviation given Optimistic and Pessimistic Time Calculator

✖A pessimistic Time is the longest time that an activity could take if everything is wrong.ⓘ Pessimistic Time [T_Pessimistic]			+10% -10%
✖Optimistic Time is the shortest possible time to complete the activity if all goes well.ⓘ Optimistic Time [T_optimistic]			+10% -10%

✖The Standard Deviation is a measure of how spread out numbers are.ⓘ Standard Deviation given Optimistic and Pessimistic Time [σ]

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Formula

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Standard Deviation given Optimistic and Pessimistic Time

Formula

σ = \frac{T Pessimistic - T optimistic}{6}

Example

0.166667 d = \frac{10 d - 9 d}{6}

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Standard Deviation given Optimistic and Pessimistic Time Solution

STEP 0: Pre-Calculation Summary

Formula Used

Standard Deviation = (Pessimistic Time-Optimistic Time)/6
σ = (T_Pessimistic-T_optimistic)/6
This formula uses 3 Variables

Variables Used

Standard Deviation - (Measured in Second) - The Standard Deviation is a measure of how spread out numbers are.
Pessimistic Time - (Measured in Second) - A pessimistic Time is the longest time that an activity could take if everything is wrong.
Optimistic Time - (Measured in Second) - Optimistic Time is the shortest possible time to complete the activity if all goes well.

STEP 1: Convert Input(s) to Base Unit

Pessimistic Time: 10 Day --> 864000 Second (Check conversion here)
Optimistic Time: 9 Day --> 777600 Second (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

σ = (T_Pessimistic-T_optimistic)/6 --> (864000-777600)/6

Evaluating ... ...

σ = 14400

STEP 3: Convert Result to Output's Unit

14400 Second -->0.166666666666667 Day (Check conversion here)

FINAL ANSWER

0.166666666666667 ≈ 0.166667 Day <-- Standard Deviation

(Calculation completed in 00.004 seconds)

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Credits

Created by Suman Ray Pramanik

Indian Institute of Technology (IIT), Kanpur

Suman Ray Pramanik has created this Calculator and 50+ more calculators!

Verified by Akshada Kulkarni

National Institute of Information Technology (NIIT), Neemrana

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Standard Deviation given Optimistic and Pessimistic Time Formula

Standard Deviation = (Pessimistic Time-Optimistic Time)/6
σ = (T_Pessimistic-T_optimistic)/6

What is Standard Deviation?

The standard deviation is a measure of the amount of variation or dispersion of a set of values. A low standard deviation indicates that the values tend to be close to the mean (also called the expected value) of the set, while a high standard deviation indicates that the values are spread out over a wider range.

How to Calculate Standard Deviation given Optimistic and Pessimistic Time?

Standard Deviation given Optimistic and Pessimistic Time calculator uses Standard Deviation = (Pessimistic Time-Optimistic Time)/6 to calculate the Standard Deviation, The Standard Deviation given Optimistic and Pessimistic Time is a measure of the amount of variation or dispersion of a set of values, and also a measure of how spread the data is. Standard Deviation is denoted by σ symbol.

How to calculate Standard Deviation given Optimistic and Pessimistic Time using this online calculator? To use this online calculator for Standard Deviation given Optimistic and Pessimistic Time, enter Pessimistic Time (T_Pessimistic) & Optimistic Time (T_optimistic) and hit the calculate button. Here is how the Standard Deviation given Optimistic and Pessimistic Time calculation can be explained with given input values -> 14400 = (864000-777600)/6.

FAQ

What is Standard Deviation given Optimistic and Pessimistic Time?

The Standard Deviation given Optimistic and Pessimistic Time is a measure of the amount of variation or dispersion of a set of values, and also a measure of how spread the data is and is represented as σ = (T_Pessimistic-T_optimistic)/6 or Standard Deviation = (Pessimistic Time-Optimistic Time)/6. A pessimistic Time is the longest time that an activity could take if everything is wrong & Optimistic Time is the shortest possible time to complete the activity if all goes well.

How to calculate Standard Deviation given Optimistic and Pessimistic Time?

The Standard Deviation given Optimistic and Pessimistic Time is a measure of the amount of variation or dispersion of a set of values, and also a measure of how spread the data is is calculated using Standard Deviation = (Pessimistic Time-Optimistic Time)/6. To calculate Standard Deviation given Optimistic and Pessimistic Time, you need Pessimistic Time (T_Pessimistic) & Optimistic Time (T_optimistic). With our tool, you need to enter the respective value for Pessimistic Time & Optimistic Time and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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