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Binning data according to measured values of the variable
models, controlling for a variable means binning data according to measured values of the variable. This is typically done so that the variable can no
Controlling_for_a_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
Concept in mathematical modeling, statistical modeling and experimental sciences
independent variable of interest. This effect is called confounding or omitted variable bias; in these situations, design changes and/or controlling for a variable
Dependent and independent variables
Dependent_and_independent_variables
Topics referred to by the same term
for steering a controllable system of state variables toward a desired goal Controlling for a variable in statistics Scientific control, an experiment
Control
Automobile variable valve timing technology
Variable Valve Timing & Lift Electronic Control (VTEC) is a valve system developed by Honda to improve the volumetric efficiency of a four-stroke internal
VTEC
Automobile variable valve timing technology
VVC (Variable Valve Control) is an automobile variable valve timing technology developed by Rover and applied to some high performance variants of the
Variable_Valve_Control
Methods employed to reduce error in science tests
A scientific control is an element of an experiment or observation designed to minimize the influence of variables other than the independent variable
Scientific_control
Statistical model
your own children (i.e., dependent variable), while controlling for how you were parented (i.e., independent variable). Such findings would lead to the
Mediation_(statistics)
Variable structure control (VSC) is a form of discontinuous nonlinear control. The method alters the dynamics of a nonlinear system by application of a
Variable_structure_control
Small-scale cultivation of plants
and micro-climate. In horticulture, these environmental variables may be avoided, controlled or manipulated in an indoor growing environment. Plants require
Horticulture
Conceptual model in philosophy of science
concept of a potential outcome, but his paper was not translated from Polish to English until 1990. In 1958 Cox warned that controlling for a variable Z is
Causal_model
Concept in psychology
personality variable linked with generalized expectancies about the future) and attributional style (a concept concerning explanations for past outcomes)
Locus_of_control
User-definable variable associated with each running process in many operating systems
environment in which a process runs. For example, a running process can query the value of the TEMP environment variable to discover a suitable location
Environment_variable
Method to control electric motors
Field-oriented control (FOC), also called vector control, is a variable-frequency drive (VFD) control method in which the stator currents of a three-phase
Field-oriented_control
Type of adjustable-speed drive
drive, variable voltage variable frequency drive, VVVF drive, or drive) is a type of AC motor drive (system incorporating a motor) that controls speed
Variable-frequency_drive
Bias in causal inference
making it possible to identify when a variable must be controlled for in order to obtain an unbiased estimate of a causal effect. Confounders are threats
Confounding
Fundamental building block of control systems
and the final control element (FCE) which controls the process necessary to automatically adjust the value of a measured process variable (PV) to equal
Control_loop
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
Design of tasks
used to study computer simulation Controlling for a variable – Binning data according to measured values of the variable Experimetrics (econometrics-related
Design_of_experiments
Branch of engineering studying process variables
Instrumentation and control engineering (ICE) is a branch of engineering that studies the measurement and control of process variables, and the design and
Instrumentation and control engineering
Instrumentation_and_control_engineering
System that manages the behavior of other systems
using a thermostat controlling a domestic boiler to large industrial control systems which are used for controlling processes or machines. The control systems
Control_system
Electronic amplifier that varies its gain depending on a control voltage
A variable-gain (VGA) or voltage-controlled amplifier (VCA) is an electronic amplifier that varies its gain depending on a control voltage (often abbreviated
Variable-gain_amplifier
Internal combustion engine technology
In internal combustion engines, a variable-length intake manifold (VLIM),variable intake manifold (VIM), or variable intake system (VIS) is an automobile
Variable-length intake manifold
Variable-length_intake_manifold
Design of experiments to collect similar contexts together
A. Fisher. His work in developing analysis of variance (ANOVA) set the groundwork for grouping experimental units to control for extraneous variables
Blocking_(statistics)
Value of a given part of a monitored or controlled process
process variables is essential in control systems to controlling a process. The value of the process variable is continuously monitored so that control may
Process_variable
Variables Control
optimal control theory, a control is a variable chosen by the controller or agent to manipulate state variables, similar to an actual control valve. Unlike
Control (optimal control theory)
Control_(optimal_control_theory)
Concept in probability theory and statistics
random variables, with the effect of a set of controlling random variables removed. When determining the numerical relationship between two variables of interest
Partial_correlation
Control loop feedback mechanism
a control variable u ( t ) {\displaystyle u(t)} , such as the opening of a control valve, to a new value determined by a weighted sum of the control terms
PID_controller
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
Type of statistical variable
controls" and need to be included to remove omitted variable bias. This issue arises when a bad control is an outcome variable (or similar to) in a causal
Bad_control
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
Named container for a particular type of data
quantity of data or object referred to as a value; or in simpler terms, a variable is a named container for a particular set of bits or type of data (like
Variable (high-level programming language)
Variable_(high-level_programming_language)
Component of central heating and cooling systems
of perfect control flow. The effects a variable flow system had on the selection of control valves, was not initially realized. A control valve was selected
Automatic_balancing_valve
can be used to control for confounding variables (variables other than those the researcher is studying), thereby making it easier for the research to
Stratification (clinical trials)
Stratification_(clinical_trials)
Study with uncontrolled variable of interest
conclusions without controlling the independent variable due to ethical or practical limitations. One common example studies the effect of a treatment, where
Observational_study
Method in nonlinear control theory
in the state space. Hence, sliding mode control is a variable structure control method. The multiple control structures are designed so that trajectories
Sliding_mode_control
Propeller with blades that can be rotated to control their pitch while in use
In marine propulsion, a variable-pitch propeller is a type of propeller with blades that can be rotated around their long axis to change the blade pitch
Variable-pitch propeller (marine)
Variable-pitch_propeller_(marine)
Statistical technique to use observational data for causal analysis
average change over time in the outcome variable for the treatment group to the average change over time for the control group. Although it is intended to mitigate
Difference_in_differences
Technique used to compare populations with different age profiles
using a widely used standard such as the WHO standard population allows for easier comparison with published statistics. Controlling for a variable – Binning
Age_adjustment
Statistical model relating manifest and latent variables
position on the latent variable(s), and that the manifest variables have nothing in common after controlling for the latent variable (local independence)
Latent_variable_model
Airplane wings capable of changing position to alter their geometry
changed, it is a feature of a variable-geometry aircraft. A straight wing is most efficient for low-speed flight, but for an aircraft designed for transonic
Variable-sweep_wing
Control systems and control theory based on negative feedback
control are control systems and control theory based on negative feedback for producing a control signal to maintain the controlled process variable (PV)
Linear_control
Target value for the process variable of a control system
and control theory, a setpoint (SP; also set point) is the desired or target value for an essential variable, or process value (PV) of a control system
Setpoint_(control_system)
Technique in statistics
method of instrumental variables (IV) is used to estimate causal relationships when controlled experiments are not feasible or when a treatment is not successfully
Instrumental_variables
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)
Branch of engineering and mathematics
SP-PV error, is applied as feedback to generate a control action to bring the controlled process variable to the same value as the set point. Other aspects
Control_theory
Scientific procedure performed to validate a hypothesis
importance of controlling potentially confounding variables, the use of well-designed laboratory experiments is preferred when possible. A considerable
Experiment
Topics referred to by the same term
Variable-pitch propeller can refer to: Variable-pitch propeller (marine) Variable-pitch propeller (aeronautics) This disambiguation page lists articles
Variable-pitch_propeller
Topics referred to by the same term
a part of many modern processors Kerrison Predictor, a military fire-control computer Predictor variable, also known as an independent variable A type
Predictor
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
Special-purpose legal entity and investment vehicle
A variable interest entity (VIE) is a legal structure defined by the Financial Accounting Standards Board (FASB) for situations where control over a legal
Variable_interest_entity
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
Psychological theory
Perceptual control theory (PCT) is a model of behavior based on the properties of negative feedback control loops. A control loop maintains a sensed variable at
Perceptual_control_theory
Binary feedback controller
are thus variable structure controllers. In optimal control problems, it is sometimes the case that a control is restricted to be between a lower and
Bang–bang_control
The term Variable Control Voice Actuator (VCVA) refers to a digital recording technology developed by Olympus, which is implemented in many of their digital
Variable Control Voice Actuator
Variable_Control_Voice_Actuator
Topics referred to by the same term
control elements for controlling a process variable Anti-lock brake controller, in an anti-lock braking system Industrial control system, a general term used
Controller
Quantity used to describe the mathematical state of a dynamical 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
How software progresses through its implementation
specifies. A jump command unconditionally branches control to another point in the code, and is the most basic form of controlling the flow of code. In a high-level
Control_flow
Writing format
a preference for underscores. However, these preferences had no statistical correlation to accuracy or speed when controlling for other variables. A 2010
Camel_case
Piece of machine equipment
to as a motor drive. A variable-frequency drive (VFD) or variable-speed drive (VSD) describes the electronic portion of the system that controls the speed
Motor_drive
Highly polymorphic DNA region
mitogenome, the most variable sites of HVR1 are numbered 16024-16383 (this subsequence is called HVR-I), and the most variable sites of HVR2 are numbered
Hypervariable_region
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
Statistical matching technique
control for these biases by making the groups receiving treatment and not-treatment comparable with respect to the control variables. PSM employs a predicted
Propensity_score_matching
Electrical circuit
voltage-controlled filters, voltage-controlled oscillators (e.g. variable frequency oscillators), voltage-controlled resistors, and voltage-controlled variable
Operational transconductance amplifier
Operational_transconductance_amplifier
Type of electric motor
synchronous, variable, switched and variable stepping. Reluctance motors can deliver high power density at low cost, making them attractive for many applications
Reluctance_motor
Device that changes direct current (DC) to alternating current (AC)
that can be used is PWM. Unlike the basic frequency-variable bridge converter, in the PWM controlling strategy, only two switches S3, S4 can operate at
Power_inverter
Multiple ways for multi-joint objects to realize a movement
constrains the nervous system to only controlling variables relevant to task performance, rather than controlling individual muscles or joints. Not all
Degrees_of_freedom_problem
Types of numerical variables in mathematics
distributions. A continuous variable is a variable such that there are possible values between any two values. For example, a variable over a non-empty range
Continuous or discrete variable
Continuous_or_discrete_variable
stability control DVVL: Discrete variable valve lift DVVLd: Discrete variable valve lift, includes dual cam phasing DVVLi: Discrete variable valve lift
Automotive acronyms and abbreviations
Automotive_acronyms_and_abbreviations
Statistical test of variance
was not found to be predictive of re-arrest. Controlling for other variables, having committed a felony for the first offense increases the odds of being
Omnibus_test
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
Procedural, imperative computer programming language
reference, using dummy variables for values where needed (call by value). A wide range of computational data types, program control data types, and forms
PL/I
Swedish–Swiss multinational company
measurement products, along with devices to measure, indicate, and control other process variables including pressure (most famously the Fisher-Porter tube),
ABB
Automotive piston engine technology
Variable valve lift (VVL) is an automotive piston engine technology which varies the height a valve opens in order to improve performance, fuel economy
Variable_valve_lift
(statistics) Control chart Control event rate Control limits Control variate Controlling for a variable Convergence of measures Convergence of random variables Convex
List_of_statistics_articles
Torque regulation method for three-phase AC motors
Direct torque control (DTC) is one method used in variable-frequency drives to control the torque (and thus finally the speed) of three-phase AC electric
Direct_torque_control
Discipline that uses industrial control to achieve a production level of consistency
process. For continuously variable process control it was not until 1922 that a formal control law for what we now call PID control or three-term control was
Industrial_process_control
Application of experimental method to psychological research
variable on a dependent variable depends on the level of a second independent variable. For example, the ability to catch a ball (dependent variable)
Experimental_psychology
Statistical phenomenon
of an independent variable A on an outcome variable C via a mediator variable B differs depending on levels of a moderator variable D. Specifically, either
Moderated_mediation
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
A suppressor variable is a variable that increases the predictive validity of another variable when included in a regression equation. Suppression can
Suppressor_variable
Storage of electricity in the human body
of a particular desired signal. Body capacitance was a significant nuisance when tuning the earliest radios; touching the tuning knob controlling the
Body_capacitance
Ratio of lengths of fingers
have pointed out that controlling for confounding variables is an impossible task due to the expanding list of confounding variables, including ethnicity
Digit_ratio
Theorem in statistics and econometrics
theorem formalizes this, showing what least squares does in controlling for variables. As a result, the theorem is sometimes called the regression anatomy
Frisch–Waugh–Lovell_theorem
Sequence in which children are born into a family
research is a challenge because of the difficulty of controlling all the variables that are statistically related to birth order. Family size, and a number
Birth_order
Various methods of smoothing traffic flows on busy motorways
variable speed limits, hard-shoulder running and ramp-metering controlled by overhead variable message signs. It has been implemented in several countries
Active_traffic_management
Computational Formula that can be measured in terms of True or False
applied to each variable. Put another way, it asks whether a quantified sentential form over a set of Boolean variables is true or false. For example, the
True quantified Boolean formula
True_quantified_Boolean_formula
Empirical interventional study
is particularly true if there are confounding variables that cannot be controlled or accounted for. A major impediment to drawing causal conclusions
Quasi-experiment
Control paradigm in which errors are measured before they can affect a system
A feed forward (sometimes written feedforward) is an element or pathway within a control system that passes a controlling signal from a source in its
Feed_forward_(control)
Command-line interpreter for operating systems
provided support for environment variables using keyword parameters and exportable variables. Contains strong provisions for controlling input and output
Bourne_shell
Chemical modification
researchers to control spatial, temporal and concentration variables with light. Control of these variables is valuable as it enables multiple PPG applications
Photolabile_protecting_group
Facet of ballistics and aeronautics
with pitch-only control. Variable nozzle A thrust-vectoring nozzle of variable geometry maintaining a constant, or allowing a variable, effective nozzle
Thrust_vectoring
Programming paradigm in which many processes are executed simultaneously
allows one thread to take control of a variable and prevent other threads from reading or writing it, until that variable is unlocked. The thread holding
Parallel_computing
Enclosed research greenhouse
course of a daily, or any other variable or constant, routine. This rendered the variable “temperature” experimentally controllable. Even a brute force
Phytotron
Statistical test of a mediation effect
the mediator, and the mediator and the dependent variable after controlling for the independent variable, respectively. From these models, the mediation
Sobel_test
State of steady internal conditions maintained by living things
motivation for all organic action. All homeostatic control mechanisms have at least three interdependent components for the variable being regulated: a receptor
Homeostasis
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
Variable containing a public key in Windows NT 4.0
_NSAKEY was a variable name discovered in Windows NT 4 SP5 in 1999 by Andrew D. Fernandes of Cryptonym Corporation. The variable contained a 1024-bit public
NSAKEY
Device fitted in modern vehicles that have internal combustion engines
spark timing being arrested can be a constant level, or, with the proper ignition control modules, variable. Variable rate ignition modules can be adjusted
Rev_limiter
Motor vehicle
Distance Control), voice control, variable rate steering (Active Steering), active anti-roll bars (Active Roll Stabilisation), radar cruise control (Active
BMW_6_Series_(E63)
CONTROLLING FOR-A-VARIABLE
CONTROLLING FOR-A-VARIABLE
Female
Slovene
Slovene form of Greek Hagne, NEŽA means "chaste; holy."
Female
Spanish
Spanish form of Greek Sophia, SOFÃA means "wisdom."
Female
Polish
Feminine form of Polish BogumiÅ‚, BOGUMIÅA means "God-favor."
Female
Egyptian
, a royal lady of the IIIrd or IVth dynasty.
Female
Swedish
Short form of Swedish Linnéa, NÉA means "twinflower."
Female
Polish
Feminine form of Polish LudmiÅ‚, LUDMIÅA means "people's favor."
Female
Spanish
Feminine form of Spanish PÃo, PÃA means "pious."
Female
Portuguese
Feminine form of Galician-Portuguese UxÃo, UXÃA means "well born."
Female
Swedish
Swedish form of Latin Linnaea, LINNÉA means "twin flower."
Female
Polish
Feminine form of Polish RadomiÅ‚, RADOMIÅA means "happy favor."
Boy/Male
Tamil
Triyog | தà¯à®°à¯€à®¯à¯‹à®•
Controlling all three dimension
Triyog | தà¯à®°à¯€à®¯à¯‹à®•
Boy/Male
Hindu, Indian
Controlling All Three Dimension
Female
Italian
Galician-Portuguese, Italian and Spanish form of Latin Maria, MARÃA means "obstinacy, rebelliousness" or "their rebellion."
Female
French
French form of Hebrew Leah, LÉA means "weary."
Female
Spanish
Feminine form of Spanish Estéban, ESTEFANÃA means "crown."
Female
Icelandic
Icelandic form of Old Norse Gerðr, GERÃA means "enclosure, stronghold."
Female
Icelandic
Feminine form of Icelandic Stefán, STEFANÃA means "crown."
Female
Slovene
Feminine form of Slovene Sašo, SAŠA means "defender of mankind."
Female
Spanish
Spanish form of Roman Latin Lucia, LUCÃA means "light."Â
Female
Portuguese
Galician-Portuguese form of Hebrew Leah, LÃA means "weary."
CONTROLLING FOR-A-VARIABLE
CONTROLLING FOR-A-VARIABLE
Male
English
English variant spelling of Celtic Alan, possibly ALLIN means "little rock."Â
Girl/Female
Arabic, Australian, Muslim
Wife of the Holy Prophet
Girl/Female
Indian
Honored, Revered
Girl/Female
Indian, Punjabi, Sikh
One Light; Light of God
Girl/Female
Biblical
Earthy, red, bloody things.
Boy/Male
Muslim/Islamic
King
Girl/Female
Tamil
Natural, Emotional
Boy/Male
Muslim
Chief, Leader, Joy, Delight
Boy/Male
Arabic, Muslim
Brave
Boy/Male
Hindu, Indian
Aim
CONTROLLING FOR-A-VARIABLE
CONTROLLING FOR-A-VARIABLE
CONTROLLING FOR-A-VARIABLE
CONTROLLING FOR-A-VARIABLE
CONTROLLING FOR-A-VARIABLE
a.
Holding the superiority; prevalent; controlling; as, a governing wind; a governing party in a state.
prep.
Indicating that in the character of or as being which anything is regarded or treated; to be, or as being.
a.
Not called for; not required or needed; improper; gratuitous; wanton.
n.
Governing or controlling influence; domination; power.
a.
Exerting controlling power; as, an overruling Providence.
a.
Efficacious in the highest degree; effectual; controlling; as, a sovereign remedy.
prep.
Indicating the space or time through which an action or state extends; hence, during; in or through the space or time of.
a.
Ruling; governing; prevailing; controlling; predominant; as, the dominant party, church, spirit, power.
conj.
Because; by reason that; for that; indicating, in Old English, the reason of anything.
a.
Predominant; chief; reigning; controlling; as, a ruling passion; a ruling sovereign.
prep.
Indicating that on place of or instead of which anything acts or serves, or that to which a substitute, an equivalent, a compensation, or the like, is offered or made; instead of, or place of.
a.
Of or pertaining to furs; bearing or made of fur; as, a fur cap; the fur trade.
n.
Independent or self-derived power; absolute or controlling authority; supremacy.
a.
Guiding; directing; controlling; foremost; as, a leading motive; a leading man; a leading example.
a.
Leading; controlling; ruling; predominant.
p. pr. & vb. n.
of Control
conj.
Since; because; introducing a reason of something before advanced, a cause, motive, explanation, justification, or the like, of an action related or a statement made. It is logically nearly equivalent to since, or because, but connects less closely, and is sometimes used as a very general introduction to something suggested by what has gone before.
prep.
Indicating the antecedent cause or occasion of an action; the motive or inducement accompanying and prompting to an act or state; the reason of anything; that on account of which a thing is or is done.