Informal estimation

Guesstimate

Guesstimate is an informal English portmanteau of guess and estimate, first used by American statisticians in 1934 or 1935. It is defined as an estimate made without using adequate or complete information, or, more strongly, as an estimate arrived at by guesswork or conjecture. Like the words estimate and guess, guesstimate may be used as a verb or a noun (with the same change in pronunciation as estimate). A guesstimate may be a first rough approximation pending a more accurate estimate, or it may be an educated guess at something for which no better information will become available. The word may be used in a pejorative sense if information for a better estimate is available but ignored. Guesstimation techniques are used: * in physics, where the use of guesstimation techniques to solve Fermi problems is taught as a useful skill to science students; * in cosmology, where the Drake equation is a well-known guesstimation method; * in economics, where economic forecasts and statistics are often based on guesstimates; and * in software engineering, where new development of features and release timelines are based on effort guesstimates of tasks. Lawrence Weinstein and John Adam's 2009 book Guesstimation: Solving the World's Problems on the Back of a Cocktail Napkin, based on the course "Physics on the Back of an Envelope" at Old Dominion University, promotes guesstimation techniques as a useful life skill. It includes many worked examples of guesstimation, including estimating the total number of miles that Americans drive in a year (about 2 trillion) and the amount of high-level nuclear waste that a 1 GW nuclear power plant produces in a year (about 60 tons). (Wikipedia).

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Solve a multi step equation with variables on the same side ex 15, 4(3y–1)–5y=–11

👉 Learn how to solve multi-step equations with parenthesis. An equation is a statement stating that two values are equal. A multi-step equation is an equation which can be solved by applying multiple steps of operations to get to the solution. To solve a multi-step equation with parenthes

From playlist How to Solve Multi Step Equations with Parenthesis

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Solve a multi step equation with two variables and distributive property ex 19, –7=3(t–5)–t

👉 Learn how to solve multi-step equations with parenthesis. An equation is a statement stating that two values are equal. A multi-step equation is an equation which can be solved by applying multiple steps of operations to get to the solution. To solve a multi-step equation with parenthes

From playlist How to Solve Multi Step Equations with Parenthesis

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How to solve a multi step equation when you have a variable on same side (x–3)–2–2(x+1)=6

👉 Learn how to solve multi-step equations with parenthesis. An equation is a statement stating that two values are equal. A multi-step equation is an equation which can be solved by applying multiple steps of operations to get to the solution. To solve a multi-step equation with parenthes

From playlist How to Solve Multi Step Equations with Parenthesis

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Using Distributive property twice and combining like terms to solve for x

👉 Learn how to solve multi-step equations with parenthesis. An equation is a statement stating that two values are equal. A multi-step equation is an equation which can be solved by applying multiple steps of operations to get to the solution. To solve a multi-step equation with parenthes

From playlist How to Solve Multi Step Equations with Parenthesis

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Solving a multi step equation with brackets and parenthesis ex 18, 7n+2[3(1–n)–2(1+n)]=14

👉 Learn how to solve multi-step equations. An equation is a statement stating that two values are equal. A multi-step equation is an equation which can be solved by applying multiple steps of operations to get the solution. To solve a multi-step equation, we first use distribution propert

From playlist Solve Multi-Step Equations......Help!

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From playlist FORMAL LINEAR PERSPECTIVE

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From playlist Chi-Square Test

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From playlist SIMPLE FORM PERSPECTIVE

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Applying distributive property with a negative one to solve the multi step equation

👉 Learn how to solve multi-step equations with parenthesis. An equation is a statement stating that two values are equal. A multi-step equation is an equation which can be solved by applying multiple steps of operations to get to the solution. To solve a multi-step equation with parenthes

From playlist How to Solve Multi Step Equations with Parenthesis

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Solving a multi step equation with two sets of parenthesis ex 17, (c+3)–2c–(1–3c)=2

👉 Learn how to solve multi-step equations with parenthesis. An equation is a statement stating that two values are equal. A multi-step equation is an equation which can be solved by applying multiple steps of operations to get to the solution. To solve a multi-step equation with parenthes

From playlist How to Solve Multi Step Equations with Parenthesis

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From playlist Statistics Playlist 1

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An example of projectile motion using the True Lies movie

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From playlist Advanced Mechanics

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FORMAL LINEAR PERSPECTIVE: SECTION FOUR (Ellipses) Ex# 36

Marc demonstrates the formal method of ellipses in 1Pt lying down in perspective.

From playlist FORMAL LINEAR PERSPECTIVE

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Marc demonstrates the formal method of ellipses in 1Pt at side perspective.

From playlist FORMAL LINEAR PERSPECTIVE

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7. Smallpox (II): Jenner, Vaccination, and Eradication

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From playlist Epidemics in Western Society Since 1600 with Frank Snowden

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Solving an equation by using distributive property 2/3 (c–18) = 7

👉 Learn how to solve multi-step equations with parenthesis. An equation is a statement stating that two values are equal. A multi-step equation is an equation which can be solved by applying multiple steps of operations to get to the solution. To solve a multi-step equation with parenthes

From playlist How to Solve Multi Step Equations with Parenthesis

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Solving an equation with parentheses

👉 Learn how to solve multi-step equations with parenthesis. An equation is a statement stating that two values are equal. A multi-step equation is an equation which can be solved by applying multiple steps of operations to get to the solution. To solve a multi-step equation with parenthes

From playlist How to Solve Multi Step Equations with Parenthesis

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You can buy Universe Sandbox 2 here: http://amzn.to/2yJqwU6 Or get a shirt: https://teespring.com/stores/whatdamath Hello and welcome! My name is Anton and in this video, we will talk about what the Milky Way galaxy was probably made out of billions of years ago by reversing engineering

From playlist The Milky Way

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Solving an equation with parentheses

👉 Learn how to solve multi-step equations with parenthesis. An equation is a statement stating that two values are equal. A multi-step equation is an equation which can be solved by applying multiple steps of operations to get to the solution. To solve a multi-step equation with parenthes

From playlist How to Solve Multi Step Equations with Parenthesis

Related pages

Ansatz | Fermi problem | Scientific wild-ass guess | Approximation | Conjecture | Back-of-the-envelope calculation