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Estimation
 
 
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Estimation is the calculated
Calculation

A calculation is a deliberate process for transforming one or more inputs into one or more results, with variable change.The term is used in a variety of senses, from the very definite arithmetical calculation using an algorithm to the vague heuristics of calculating a strategy in a competition or calculating the chance of a successful rela...
 approximation
Approximation

An approximation is an Accuracy and precision representation of something that is still close enough to be useful. Although approximation is most often applied to numbers, it is also frequently applied to such things as Function , shapes, and physical laws....
 of a result which is usable even if input data may be incomplete or uncertain
Uncertainty

Uncertainty is a term used in subtly different ways in a number of fields, including philosophy, Uncertainty_principle , statistics, economics, finance, insurance, psychology, sociology, engineering, and information science....
.

In statistics
Statistics

Statistics is a Mathematics pertaining to the collection, analysis, interpretation or explanation, and presentation of data. It also provides tools for prediction and forecasting based on data....
, see estimation theory
Estimation theory

Estimation theory is a branch of statistics and signal processing that deals with estimating the values of parameters based on measured/empirical data....
, estimator
Estimator

In statistics, an estimator is a function of the observable sample data that is used to estimate an unknown population parameter ; an estimate is the result from the actual application of the function to a particular Sampling_ of data....
.

In mathematics
Mathematics

Mathematics is the study of quantity, structure, space, change, and related topics of pattern and form. Mathematicians seek out patterns whether found in numbers, space, natural science, computers, imaginary abstractions, or elsewhere....
, approximation
Approximation

An approximation is an Accuracy and precision representation of something that is still close enough to be useful. Although approximation is most often applied to numbers, it is also frequently applied to such things as Function , shapes, and physical laws....
 or estimation typically means finding upper or lower bounds
Upper bound

In mathematics, especially in order theory, an upper bound of a subset S of some partially ordered set is an element of P which is greater than or equal to every element of S....
 of a quantity that cannot readily be computed precisely and is also an educated guess






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Estimation is the calculated
Calculation

A calculation is a deliberate process for transforming one or more inputs into one or more results, with variable change.The term is used in a variety of senses, from the very definite arithmetical calculation using an algorithm to the vague heuristics of calculating a strategy in a competition or calculating the chance of a successful rela...
 approximation
Approximation

An approximation is an Accuracy and precision representation of something that is still close enough to be useful. Although approximation is most often applied to numbers, it is also frequently applied to such things as Function , shapes, and physical laws....
 of a result which is usable even if input data may be incomplete or uncertain
Uncertainty

Uncertainty is a term used in subtly different ways in a number of fields, including philosophy, Uncertainty_principle , statistics, economics, finance, insurance, psychology, sociology, engineering, and information science....
.

In statistics
Statistics

Statistics is a Mathematics pertaining to the collection, analysis, interpretation or explanation, and presentation of data. It also provides tools for prediction and forecasting based on data....
, see estimation theory
Estimation theory

Estimation theory is a branch of statistics and signal processing that deals with estimating the values of parameters based on measured/empirical data....
, estimator
Estimator

In statistics, an estimator is a function of the observable sample data that is used to estimate an unknown population parameter ; an estimate is the result from the actual application of the function to a particular Sampling_ of data....
.

In mathematics
Mathematics

Mathematics is the study of quantity, structure, space, change, and related topics of pattern and form. Mathematicians seek out patterns whether found in numbers, space, natural science, computers, imaginary abstractions, or elsewhere....
, approximation
Approximation

An approximation is an Accuracy and precision representation of something that is still close enough to be useful. Although approximation is most often applied to numbers, it is also frequently applied to such things as Function , shapes, and physical laws....
 or estimation typically means finding upper or lower bounds
Upper bound

In mathematics, especially in order theory, an upper bound of a subset S of some partially ordered set is an element of P which is greater than or equal to every element of S....
 of a quantity that cannot readily be computed precisely and is also an educated guess . While initial results may be unusably uncertain
Certainty

Certainty can be defined as either perfect knowledge that has total security from error, or the mental state of being without doubt. Objectively defined, certainty is total continuity and validity of all foundationalism inquiry, to the highest degree of precision....
, recursive
Recursion

Recursion, in mathematics and computer science, is a method of defining Function in which the function being defined is applied within its own definition....
 input from output, can iteratively
Iteration

Iteration means the act of repeating....
 purify
Purification

Purification is the process of rendering something pure, i.e. clean of foreign elements and/or pollution, and may refer to:* List of purification methods in chemistry...
 results to be approximately accurate, certain, complete and noise-free.

In project management
Project management

Project management is the List of academic disciplines of planning, organizing and managing resources to bring about the successful completion of specific project goals and objectives....
, see estimation (project management)
Estimation (project management)

In project management , accurate estimates are the basis of sound project planning. Many processes have been developed to aid engineers in making accurate estimates, such as...
.

See also

  • Estimation theory
    Estimation theory

    Estimation theory is a branch of statistics and signal processing that deals with estimating the values of parameters based on measured/empirical data....
     (statistics)
  • "Estimated" sign
    Estimated sign

    The estimated sign is a mark required to be appended to the nominal mass or volume printed on prepackaged goods for sale within the European Union....
  • Fermi problem
    Fermi problem

    In physics, particularly in physics education, a Fermi problem, Fermi question, or Fermi estimate is an estimation problem designed to teach dimensional analysis, approximation, and the importance of clearly identifying one's assumptions....
     (physics)
  • Guesstimate
    Guesstimate

    Guesstimate is a portmanteau of the words guess and estimate, first used by American statisticians in 1934 or 1935. It is defined as an estimate made without adequate or complete information, or, more strongly, as an estimate arrived at by guesswork or conjecture....
  • Optimism bias
    Optimism bias

    Optimism bias is the demonstrated systematic tendency for people to be over-optimistic about the outcome of planned actions. This includes over-estimating the likelihood of positive events and under-estimating the likelihood of negative events....
  • Reference class forecasting
    Reference class forecasting

    Reference class forecasting predicts the outcome of a planned action based on actual outcomes in a reference class of similar actions to that being forecast....
  • Sample size
    Sample size

    The sample size of a statistical sample is the number of observations that constitute it. It is typically denoted n, a positive integer ....
     (statistics)