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Topics referred to by the same term
Look up Variable, variable, or variables in Wiktionary, the free dictionary. Wikiversity has learning resources about Variable Variable may refer to:
Variable
Concept in mathematical modeling, statistical modeling and experimental sciences
A variable is considered dependent if it depends on (or is hypothesized to depend on) an independent variable. Dependent variables are the outcome of the
Dependent and independent variables
Dependent_and_independent_variables
Mathematical concept
In an optimization problem, a slack variable is a variable that is added to an inequality constraint to transform it into an equality constraint. A non-negativity
Slack_variable
Experimental element which is not changed throughout the experiment
A control variable (or scientific constant) in scientific experimentation is an experimental element which is constant (controlled) and unchanged throughout
Control_variable
User-definable variable associated with each running process in many operating systems
environment variable is a user-definable value that can affect the way running processes will behave on a computer. Environment variables are part of
Environment_variable
Files in which the rate of bit transmission is non-constant
Variable bitrate (VBR) is a term used in telecommunications and computing that relates to the bitrate used in sound or video encoding. As opposed to constant
Variable_bitrate
Topics referred to by the same term
Look up hidden variable in Wiktionary, the free dictionary. Hidden variable may refer to: Confounding, in statistics, an extraneous variable in a statistical
Hidden_variable
Variable representing a random phenomenon
A random variable (also called random quantity, aleatory variable, or stochastic variable) is a mathematical formalization of a quantity or object which
Random_variable
antecedent variable is a variable that cannot help to explain the apparent relationship (or part of the relationship) between other variables that are nominally
Antecedent_variable
Computer environment variable
PATH is an environment variable on Unix-like operating systems, DOS, OS/2, and Microsoft Windows, specifying a set of directories where executable programs
PATH_(variable)
Star whose brightness fluctuates, as seen from Earth
A variable star is a star whose brightness as seen from Earth (its apparent magnitude) changes systematically with time. This variation may be caused by
Variable_star
Concept in mathematics or computer science
science, a variable may be said to be either free or bound. Some older books use the terms real variable and apparent variable for free variable and bound
Free variables and bound variables
Free_variables_and_bound_variables
A suppressor variable is a variable that increases the predictive validity of another variable when included in a regression equation. Suppression can
Suppressor_variable
Symbol representing a mathematical object
that the variable represents or denotes the object, and that any valid candidate for the object is the value of the variable. The values a variable can take
Variable_(mathematics)
Named container for a particular type of data
In some high-level programming languages, a variable is an abstract storage or indirection location paired with an associated symbolic name, which contains
Variable (high-level programming language)
Variable_(high-level_programming_language)
Types of numerical variables in mathematics
a quantitative variable may be continuous or discrete. If it can take on two real values and all the values between them, the variable is continuous in
Continuous or discrete variable
Continuous_or_discrete_variable
Type of statistical bias
In statistics, omitted-variable bias (OVB) occurs when a statistical model leaves out one or more relevant variables. The bias results in the model attributing
Omitted-variable_bias
Probability distribution
a type of continuous probability distribution for a real-valued random variable. The general form of its probability density function is f(x)=12πσ2exp(−(x−μ)22σ2)
Normal_distribution
Type of variable star that pulsates radially
A Cepheid variable (/ˈsɛfi.ɪd, ˈsiːfi-/) is a type of variable star that pulsates radially, varying in both diameter and temperature. It changes in brightness
Cepheid_variable
Font file with many design variants
platforms. Variable fonts should not be confused with variable-width fonts. A variable font may be either variable-width or fixed-width. OpenType variable fonts
Variable_font
Placeholder term used in computer science
A metasyntactic variable is a specific word or set of words identified as a placeholder in computer science and specifically computer programming. These
Metasyntactic_variable
Variable capable of taking on a limited number of possible values
In statistics, a categorical variable (also called qualitative variable) is a variable that can take on one of a limited, and usually fixed, number of
Categorical_variable
Technique in statistics
and related disciplines, the quasi-experimental method of instrumental variables (IV) is used to estimate causal relationships when controlled experiments
Instrumental_variables
processes in probability theory and statistics, a nuisance variable is a random variable that is fundamental to the probabilistic model, but that is
Nuisance_variable
Numeric stand-ins in regression analysis
In regression analysis, a dummy variable (also known as indicator variable or just dummy) is one that takes a binary value (0 or 1) to indicate the absence
Dummy_variable_(statistics)
Sum of marginal costs over all units produced
Variable costs are costs that change as the quantity of the good or service that a business produces changes. Variable costs are the sum of marginal costs
Variable_cost
Computer programming, a variable only usable in a portion of a program (the scope)
In computer science, a local variable is a variable that is given local scope. A local variable reference in the function or block in which it is declared
Local_variable
Topics referred to by the same term
Real variable may refer to: A variable taking real values, see Function of a real variable A free variable (archaic) Real versus nominal value (economics)
Real_variable
Payment identifier
Variable symbol (Czech: Variabilní symbol) is an identifier widely used for domestic payments in Slovakia and Czech Republic. Its maximum length is 10
Variable_symbol
Capacitor whose capacitance can be changed
A variable capacitor is a capacitor whose capacitance may be intentionally and repeatedly changed mechanically or electronically. Variable capacitors are
Variable_capacitor
Programming variable that persists for the lifetime of the program
In computer programming, a static variable is a variable that has been allocated "statically", meaning that its lifetime (or "extent") is the entire run
Static_variable
Computer programming, a variable accessible throughout a computer program
In computer programming, a global variable is a variable with global scope, meaning that it is visible (hence accessible) throughout the program, unless
Global_variable
14th episode of the 5th season of Lost
"The Variable" is the 14th television episode of the fifth season of Lost, and the 100th episode overall. It originally aired on the American Broadcasting
The_Variable
Index of animals with the same common name
Variable pitohui may refer to several species of birds: Northern variable pitohui, found on New Guinea and neighboring islands Southern variable pitohui
Variable_pitohui
Topics referred to by the same term
Variable geometry may refer to: Variable-geometry turbocharger Variable geometry turbomachine Variable geometry Europe, a proposed strategy for European
Variable_geometry
Branch of mathematics studying functions of a complex variable
functions of a complex variable, is the branch of mathematical analysis that studies complex-valued functions of one or more complex variables. It is used in
Complex_analysis
Combustion engine technology
Variable displacement is an automobile engine technology that allows the engine displacement to change, usually by deactivating cylinders, for improved
Variable_displacement
Dynamic display refresh rate that can continuously and seamlessly vary on the fly
Variable refresh rate (VRR) refers to a dynamic display that can continuously and seamlessly change its refresh rate without user input. A display supporting
Variable_refresh_rate
Compiler optimization
In compilers, live variable analysis (or simply liveness analysis) is a classic data-flow analysis to calculate the variables that are live at each point
Live-variable_analysis
Topics referred to by the same term
dummy variable or dummy variables in Wiktionary, the free dictionary. The term dummy variable can refer to either of the following: Bound variable, in mathematics
Dummy_variable
Describes the general shape and layout of an aircraft wing
duplicated here under more than one heading. This is particularly so for variable geometry and combined (closed) wing types. Most of the configurations described
Wing_configuration
Mathematical function for the probability a given outcome occurs in an experiment
probability. Probability distributions are closely linked to random variables. A random variable is a function that assigns a value to each outcome of a probabilistic
Probability_distribution
Concept in probability theory and statistics
random variables are a generalization of real-valued random variables to complex numbers, i.e. the possible values a complex random variable may take
Complex_random_variable
Automotive transmission technology
A continuously variable transmission (CVT) is an automatic transmission that can change through a continuous range of gear ratios, typically resulting
Continuously variable transmission
Continuously_variable_transmission
Variable masking one with the same name
variable shadowing occurs when a variable declared within a certain scope (decision block, method, or inner class) has the same name as a variable declared
Variable_shadowing
Statistical modeling method
between a scalar response (dependent variable) and one or more explanatory variables (regressor or independent variable) related via a linear combination
Linear_regression
Japanese 2D fighting game/eroge series
Variable Geo (ヴァリアブル・ジオ, Variaburu Jio), also known as V.G., is a Japanese 2D fighting game and eroge series developed and published by TGL for consoles
Variable_Geo
Probability distribution modeling a coin toss which need not be fair
Jacob Bernoulli, is the discrete probability distribution of a random variable which takes the value 1 with probability p {\displaystyle p} and the value
Bernoulli_distribution
System used by trains to cross a break of gauge
Variable gauge systems allow railway vehicles to travel between two railways with different track gauges. Vehicles are equipped with variable gauge axles
Variable_gauge
Statistical model
an independent variable and a dependent variable, through the inclusion of a third hypothetical variable known as a mediator variable (also referred to
Mediation_(statistics)
Mathematical function used in optimisation
mathematics and computer science, variable splitting is a decomposition method that relaxes a set of constraints. When the variable x {\displaystyle x} appears
Variable_splitting
Type of data structure
In computer programming, a variable-length array (VLA), also called variable-sized or runtime-sized, is an array data structure whose length is determined
Variable-length_array
An undefined variable in the source code of a computer program is a variable that is accessed in the code but has not been declared by that code. In some
Undefined_variable
Method for IP address allocation and routing
allocated to end users. CIDR is based on variable-length subnet masking (VLSM), in which network prefixes have variable length as opposed to the fixed-length
Classless Inter-Domain Routing
Classless_Inter-Domain_Routing
In computer science, an induction variable is a variable that gets increased or decreased by a fixed amount on every iteration of a loop or is a linear
Induction_variable
Topics referred to by the same term
Variable type may refer to: Variable star The data type of a variable within a programming language's type system This disambiguation page lists articles
Variable_type
Mathematical variable needed to describe the state of a thermodynamical system
A state variable is one of the set of mathematical variables that are used to describe the "state" of a system, e.g. of a dynamical system or a thermodynamical
State_variable
Option available on many nuclear weapons
Variable yield, or dial-a-yield, is an option available on most modern nuclear weapons. It allows the operator to specify a weapon's yield, or explosive
Variable_yield
Mathematical functions of split-complex numbers
function of a motor variable is a function with arguments and values in the split-complex number plane, much as functions of a complex variable involve ordinary
Motor_variable
all global variables is known as the global environment or global state. In compiled languages, global variables are generally static variables, whose extent
Glossary_of_computer_science
Binning data according to measured values of the variable
controlling for a variable means binning data according to measured values of the variable. This is typically done so that the variable can no longer act
Controlling_for_a_variable
Inference algorithm for probabilistic graphical models
Variable elimination (VE) is a simple and general exact inference algorithm in probabilistic graphical models, such as Bayesian networks and Markov random
Variable_elimination
Shared Variables are a feature of the programming language APL which allows APL programs running on one processor to share information with another processor
Shared_Variables
logic, computer algebra, and automated theorem proving, a fresh variable is a variable that did not occur in the context considered so far.[citation needed]
Fresh_variable
Member variable of a class that all its objects possess a their own copy of
object-oriented programming, an instance variable is a variable defined in a class (i.e., a member variable), for which each instantiated object of the
Instance_variable
Index of animals with the same common name
Variable dwarf kingfisher is a common name of a group of kingfishers in the genus, Ceyx. The variable dwarf kingfisher (Ceyx lepidus or Alcedo lepidus)
Variable_dwarf_kingfisher
In telecommunications, a variable length buffer or elastic buffer is a buffer into which data may be entered at one rate and removed at another rate without
Variable-length_buffer
Classification of variables in economic models
variable is one whose measure is determined outside the model and is imposed on the model. An exogenous change is a change in an exogenous variable.
Exogenous and endogenous variables
Exogenous_and_endogenous_variables
Variable costing is a managerial accounting cost concept. Under this method, manufacturing overhead is incurred in the period that a product is produced
Variable_costing
Type of adjustable-speed drive
A variable-frequency drive (VFD, or adjustable-frequency drive, adjustable-speed drive, variable-speed drive, AC drive, micro drive, inverter drive, variable
Variable-frequency_drive
Variable defined outside any function block in C programming
B, an external variable is a variable defined outside any function block. On the other hand, a local (automatic) variable is a variable defined inside
External_variable
Species of bird
The variable oystercatcher (Haematopus unicolor) is a species of wader in the family Haematopodidae. It is endemic to New Zealand. The Māori name is tōrea-pango
Variable_oystercatcher
Process of altering the timing of a valve lift event
Variable valve timing (VVT) is the process of altering the timing of a valve lift event in an internal combustion engine, and is often used to improve
Variable_valve_timing
Class of variable star
Rotating ellipsoidal variables are a class of close binary variable star systems whose components are ellipsoidal. They are not eclipsing, but fluctuations
Rotating_ellipsoidal_variable
Real function with secant line between points above the graph itself
graph is shaped like a cap ∩. A twice-differentiable function of a single variable is convex if and only if its second derivative is nonnegative on its entire
Convex_function
Type of on-demand printing in which text and graphics may be altered in-process
Variable data printing (VDP) (also known as variable information printing (VIP) or variable imaging (VI)) is a form of digital printing, including on-demand
Variable_data_printing
In computer programming, a temporary variable is a variable with short lifetime, usually to hold data that will soon be discarded, or before it can be
Temporary_variable
Local variable in computer programming
automatic variable is a local variable which is allocated and deallocated automatically when program flow enters and leaves the variable's scope. The
Automatic_variable
Variable defined in a class whose objects all possess the same copy
class variable is a variable defined in a class of which a single copy exists, regardless of how many instances of the class exist. A class variable is not
Class_variable
A limited dependent variable is a variable whose range of possible values is "restricted in some important way." In econometrics, the term is often used
Limited_dependent_variable
Capital invested in means of production
production, which contrasts with variable capital (v; German: variables Kapital). The distinction between constant and variable refers to an aspect of the economic
Constant_and_variable_capital
List of ships with the same or similar names
Three ships of the Royal Navy have borne the name HMS Variable: HMS Variable was a 12-gun sloop/schooner, previously the mercantile ship Redbridge. She
HMS_Variable
Branch of mathematics
Calculus is the "mathematical backbone" for solving problems in which variable quantities change with time or another reference value. It has also been
Calculus
Type of turbocharging technology
Variable-geometry turbochargers (VGTs), occasionally known as variable-nozzle turbochargers (VNTs), are a type of turbochargers, usually designed to allow
Variable-geometry turbocharger
Variable-geometry_turbocharger
Statistical model relating manifest and latent variables
A latent variable model is a statistical model that relates a set of observable variables (also called manifest variables or indicators) to a set of latent
Latent_variable_model
Variable used in place of another variable
In statistics, a proxy or proxy variable is a variable that serves in place of an unobservable or immeasurable variable, while not being otherwise relevant
Proxy_(statistics)
Average value of a random variable
Lebesgue integral of the random variable with respect to the underlying probability measure. The expected value of a random variable X is often denoted by E (
Expected_value
Scripting language created in 1994
PHP variables are declared and initialized. <?php $name = 'John'; // variable of string type being declared and initialized $age = 18; // variable of integer
PHP
Type of variable star
Beta Cephei variables, also known as Beta Canis Majoris stars, are variable stars that exhibit small rapid variations in their brightness due to pulsations
Beta_Cephei_variable
Science and research term
etc.). Attributes are closely related to variables. A variable is a logical set of attributes. Variables can "vary" – for example, be high or low. How
Variable and attribute (research)
Variable_and_attribute_(research)
Species of bird
The variable seedeater (Sporophila corvina) is a passerine bird which breeds from southern Mexico through Central America to the Chocó of northwestern
Variable_seedeater
Probability distribution
distribution remains a good approximation, and is widely used. If the random variable X follows the binomial distribution with parameters n∈ℕ (a natural number)
Binomial_distribution
Protein(s) forming a major part of an organism's immune system
equally wide variety. The rest of an antibody's structure is much less variable; in humans, antibodies occur in five classes or isotypes: IgA, IgD, IgE
Antibody
Book by Robert Heinlein and Spider Robinson
Variable Star is a 2006 science fiction novel by American author Spider Robinson, based on the surviving seven pages of an eight-page 1955 novel outline
Variable_Star
Statistical measure of how far values spread from their average
the expected value of the squared deviation from the mean of a random variable. The standard deviation is the square root of the variance. Technically
Variance
2019 video game
Variable Barricade (stylized in all caps) is a 2019 otome game and visual novel developed by Otomate and Design Factory. Hibari Tojo (first name can be
Variable_Barricade
Topics referred to by the same term
Variable retention may refer to: Variable retention (silvicultural system), a method of forest management Variable retention time, a phenomenon in DRAM
Variable_retention
Variable associated with a specific object, and accessible for all its methods
In object-oriented programming, a member variable (sometimes called a member field) is a variable that is associated with a specific object, and accessible
Member_variable
Value of a given part of a monitored or controlled process
In control theory, a process variable (PV; also process value or process parameter) is the current measured value of a particular part of a process which
Process_variable
Species of butterfly
The variable checkerspot or Chalcedon checkerspot (Euphydryas chalcedona) is a butterfly in the family Nymphalidae. It is found in western North America
Variable_checkerspot
travel, tourism, insurance
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travel, tourism, insurance