FormulaDen.com

Physics Chemistry Math Chemical Engineering Civil Electrical Electronics Electronics and Instrumentation Materials Science Mechanical Production Engineering Financial Health

Mean or Expected Time Formula

GoExpected Time given Probability Factor Formula

Fx Copy

LaTeX Copy

Mean Time, also called expected time is the time needed to complete an activity. Check FAQs

t e = \frac{t 0 + (4 \cdot t m) + t p}{6}

t_e - Mean Time?t₀ - Optimistic Time?t_m - Most Likely Time?t_p - Pessimistic Time?

Mean or Expected Time Example

With values

With units

Only example

Here is how the Mean or Expected Time equation looks like with Values.

Here is how the Mean or Expected Time equation looks like with Units.

Here is how the Mean or Expected Time equation looks like.

4 = \frac{2 + (4 \cdot 3) + 10}{6}

4d = \frac{2d + (4 \cdot 3d) + 10d}{6}

4 = \frac{2 + (4 \cdot 3) + 10}{6}

Tip: Use pencil ( Pencil

) icon above to edit Input Values and Units.

Calculate

Recalculate

Solution

Copy

Reset

You are here -

Home » Category

Engineering » Category

Civil » Category

Construction Practice, Planning and Management » fx Mean or Expected Time

Mean or Expected Time Solution

Follow our step by step solution on how to calculate Mean or Expected Time?

FIRST Step Consider the formula

t e = \frac{t 0 + (4 \cdot t m) + t p}{6}

Next Step Substitute values of Variables

∴

t e = \frac{2d + (4 \cdot 3d) + 10d}{6}

Next Step Prepare to Evaluate

∴

t e = \frac{2 + (4 \cdot 3) + 10}{6}

Next Step Evaluate

∴

t e = 345600s

LAST Step Convert to Output's Unit

∴

t e = 4d

Mean or Expected Time Formula Elements

Variables

Mean Time

Mean Time, also called expected time is the time needed to complete an activity.

Symbol: t_e

Measurement: TimeUnit: d

Note: Value should be greater than 0.

Formulas to find Mean Time

Optimistic Time

Optimistic Time is the shortest possible time to complete the activity if all goes well.

Symbol: t₀

Measurement: TimeUnit: d

Note: Value should be greater than 0.

Formulas to find Optimistic Time

Most Likely Time

Most Likely Time is the normal time activity would take.

Symbol: t_m

Measurement: TimeUnit: d

Note: Value should be greater than 0.

Formulas to find Most Likely Time

Pessimistic Time

A Pessimistic Time is the longest time that an activity could take if everything is wrong.

Symbol: t_p

Measurement: TimeUnit: d

Note: Value should be greater than 0.

Formulas to find Pessimistic Time

Other Formulas to find Mean Time

Go Expected Time given Probability Factor

t e = T s - (σ \cdot Z)

Other formulas in Project Evaluation and Review Technique category

Go Optimistic Time given Expected Time

t 0 = (6 \cdot t e) - (4 \cdot t m) - t p

Go Pessimistic Time given Expected Time

t p = 6 \cdot t e - t 0 - 4 \cdot t m

Go Most Likely Time given Expected Time

t m = \frac{6 \cdot t e - t 0 - t p}{4}

Go Standard Deviation of Activity

σ = \frac{t p - t 0}{6}

How to Evaluate Mean or Expected Time?

Mean or Expected Time evaluator uses Mean Time = (Optimistic Time+(4*Most Likely Time)+Pessimistic Time)/6 to evaluate the Mean Time, The Mean or Expected Time formula is defined as the time taken for completion of an activity. It is found based on the PERT technique. Mean Time is denoted by t_e symbol.

How to evaluate Mean or Expected Time using this online evaluator? To use this online evaluator for Mean or Expected Time, enter Optimistic Time (t₀), Most Likely Time (t_m) & Pessimistic Time (t_p) and hit the calculate button.

FAQs on Mean or Expected Time

What is the formula to find Mean or Expected Time?

The formula of Mean or Expected Time is expressed as Mean Time = (Optimistic Time+(4*Most Likely Time)+Pessimistic Time)/6. Here is an example- 4.6E-5 = (172800+(4*259200)+864000)/6.

How to calculate Mean or Expected Time?

With Optimistic Time (t₀), Most Likely Time (t_m) & Pessimistic Time (t_p) we can find Mean or Expected Time using the formula - Mean Time = (Optimistic Time+(4*Most Likely Time)+Pessimistic Time)/6.

What are the other ways to Calculate Mean Time?

Here are the different ways to Calculate Mean Time-

Mean Time=Scheduled Time-(Standard Deviation*Probability Factor)

Can the Mean or Expected Time be negative?

No, the Mean or Expected Time, measured in Time cannot be negative.

Which unit is used to measure Mean or Expected Time?

Mean or Expected Time is usually measured using the Day[d] for Time. Second[d], Millisecond[d], Microsecond[d] are the few other units in which Mean or Expected Time can be measured.

Let Others Know

✖

Facebook

Twitter

Copied!

Mean or Expected Time Formula

​GoExpected Time given Probability Factor Formula

Mean or Expected Time Example

Mean or Expected Time Solution

Mean or Expected Time Formula Elements

Other Formulas to find Mean Time

Other formulas in Project Evaluation and Review Technique category

How to Evaluate Mean or Expected Time?

FAQs on Mean or Expected Time

Variable Name

GoExpected Time given Probability Factor Formula