random variable - traduzione in olandese
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random variable - traduzione in olandese

VARIABLE REPRESENTING A RANDOM PHENOMENON
RandomVariable; Random variables; Random variation; Discrete random variable; Stochastic variable; Aleatory variable; Statistical variable; Random Variable; Discrete Random Variable; Equal in distribution; Random quantity
  •  If the sample space is the set of possible numbers rolled on two dice, and the random variable of interest is the sum ''S'' of the numbers on the two dice, then ''S'' is a discrete random variable whose distribution is described by the [[probability mass function]] plotted as the height of picture columns here.
  • This graph shows how random variable is a function from all possible outcomes to real values. It also shows how random variable is used for defining probability mass functions.

random variable         
toevallige variabele
environment variable         
DYNAMIC VALUE THAT AFFECTS THE BEHAVIOR OF PROCESSES ON A COMPUTER
%SystemRoot%; %SystemDrive%; C:\WINDOWS; Environment variables; Env var; LC ALL; Environment (computing); Shell variable; Printenv; AppData; Environmental variable; %SYSTEMROOT%; $HOME; System variable; LD LIBRARY PATH; LIBPATH; LIBPATH (AIX); PROMPT (environment variable); Master environment; Pre-environment; Reserved environment variable; Master environment variable; Local environment variable; Local environment (computing); Local environment (DOS); Master environment (DOS); Pre-environment variable; Environment segment; Environment segment (computing); Environment segment (DOS); %APPEND%; %CONFIG%; %CMDLINE%; %COMSPEC%; %COPYCMD%; %DIRCMD%; %LANG%; %LANGSPEC%; %NO SEP%; %PATH%; %PROMPT%; %TEMP%; %TMP%; System environment; System environment (computing); System environment (DOS); System information variable; System information variable (computing); System information variable (DOS); $CLS (environment variable); Pseudo-environment variable; Unix environment variable; DOS environment variable; GEM environment variable; OS/2 environment variable; Windows environment variable; DOS pseudo-environment variable; Windows pseudo-environment variable; Dynamic environment variable; Dynamic environment variable (Microsoft); Dynamic environment variable (Windows); Dynamic environment variable (CMD); Dynamic environment variable (COMMAND.COM); Dynamic environment variable (DOS); System info variable; System information variable (COMMAND.COM); DOS system information variable; DOS system info variable; Internal variable (4DOS); Internal variable (4OS2); Internal variable (4NT); Internal variable (JP Software); 4DOS internal variable; 4OS2 internal variable; 4NT internal variable; 4DOS variable function; 4OS2 variable function; 4NT variable function; Variable function (4DOS); Variable function (4OS2); Variable function (4NT); Variable function (JP Software); JP Software variable function; JP Software internal variable; Dynamic environment variable (COMMAND); System information variable (COMMAND); DR-DOS system information variable; Novell DOS system information variable; Novell system information variable; OpenDOS system information variable; Caldera system information variable; RETURN (DOS command); %DRDOSCFG%; %NWDOSCFG%; %OPENDOSCFG%; %DRCOMSPEC%; %DRSYS%; %HOMEDIR%; %CMDCMDLINE%; %CMDEXTVERSION%; %RANDOM%; %TIME%; %SWITCHAR%; %PEXEC%; %OS%; %NOSOUND%; %NOCHAR%; %LOGINNAME%; %INFO%; %$DIR%; %$PAGE%; %$LENGTH%; %$WIDTH%; %VER%; %YESCHAR%; %$CLS%; %TASKMGRWINDIR%; %$SLICE%; %$ON%; %$OFF%; %$HEADER%; %$FOOTER%; %ERRORLEVEL%; %ERRORLVL%; %HOUR%; %HOUR24%; %MINUTE%; %MONTH%; %SECOND%; %YEAR%; %/%; %STATION%; %MDOS EXEC%; %AM PM%; %GREETING TIME%; %MONTH NAME%; %NDAY OF WEEK%; %OS VERSION%; %SHORT YEAR%; %LOGIN NAME%; %P STATION%; %FULL NAME%; % YEAR%; % CODEPAGE%; % COLUMNS%; % COUNTRY%; % DAY%; % HOUR%; % MINUTE%; % MONTH%; % ROWS%; % SECOND%; MS-DOS environment; FBP USER (environment variable); FBP USER; BEGINLIBPATH (environment variable); BEGINLIBPATH; ENDLIBPATH (environment variable); ENDLIBPATH; Unset (Unix); C\WINDOWS; System variables; CD (pseudo-environment variable); %DIRSIZE%; %NEWFILE%; %COMM%; %HTTP DIR%; %HOSTNAME%; %FTPDIR%; %TZ%; %SOCKETS%; %LIBPATH%; LIBPATH (environment variable); Windir (Windows environment variable); Windir (environment variable); LOCALAPPDATA (Windows environment variable); LOCALAPPDATA (environment variable); LOCALAPPDATA; ProgramFiles (Windows environment variable); ProgramFiles (environment variable); ProgramFiles; ProgramFiles(x86) (Windows environment variable); ProgramFiles(x86) (environment variable); ProgramFiles(x86); ProgramW6432; ProgramW6432 (environment variable); ProgramW6432 (Windows environment variable); CommonProgramFiles; CommonProgramFiles (Windows environment variable); CommonProgramFiles (environment variable); SystemDrive (Windows environment variable); SystemDrive (environment variable); SystemDrive; SystemRoot; SystemRoot (environment variable); SystemRoot (Windows environment variable); ALLUSERSPROFILE (environment variable); ALLUSERSPROFILE; ALLUSERSPROFILE (Windows environment variable); PROGRAMDATA (environment variable); PROGRAMDATA; PROGRAMDATA (Windows environment variable); USERDOMAIN (environment variable); USERDOMAIN; USERDOMAIN (Windows environment variable); USERPROFILE (environment variable); USERPROFILE; USERPROFILE (Windows environment variable); APPDATA (environment variable); APPDATA; APPDATA (Windows environment variable); %APPDATA%; %LOCALAPPDATA%; %ProgramFiles%; %ProgramFiles(x86)%; %ProgramW6432%; %CommonProgramFiles%; %ALLUSERSPROFILE%; %PROGRAMDATA%; %USERDOMAIN%; %USERPROFILE%; %windir%; CMDLINE (environment variable); CONFIG (environment variable); $LD LIBRARY PATH; %HOMEDRIVE%; %HOMEPATH%; Setenv; Unsetenv; Environment string
omgevings variabel, gegeven dat is opgeslagen in DOS onder een unieke naam en details bepaalt over de werkomgeving
variable cost         
COSTS THAT CHANGE IN PROPORTION TO THE GOOD OR SERVICE THAT A BUSINESS PRODUCES
Variable costs; Total variable cost; Total variable costs; Variable Cost; Prime cost; Variable Costs; Variable expense; Prime costs
veranderlijke kosten (afhankelijk van de produktieomvang)

Definizione

environment variable
<programming, operating system> A variable that is bound in the current environment. When evaluating an expression in some environment, the evaluation of a variable consists of looking up its name in the environment and substituting its value. Most programming languages have some concept of an environment but in Unix shell scripts it has a specific meaning slightly different from other contexts. In shell scripts, environment variables are one kind of shell variable. They differ from local variables and command line arguments in that they are inheritted by a child process. Examples are the PATH variable that tells the shell the file system paths to search to find command executables and the TZ variable which contains the local time zone. The variable called "SHELL" specifies the type of shell being used. These variables are used by commands or shell scripts to discover things about the environment they are operating in. Environment variables can be changed or created by the user or a program. To see a list of environment variables type "setenv" at the csh or tcsh prompt or "set" at the sh, bash, jsh or ksh prompt. In other programming languages, e.g. functional programming languages, the environment is extended with new bindings when a function's parameters are bound to its {actual arguments} or when new variables are declared. In a block-structured procedural language, the environment usually consists of a linked list of activation records. (1999-01-26)

Wikipedia

Random variable

A random variable (also called random quantity, aleatory variable, or stochastic variable) is a mathematical formalization of a quantity or object which depends on random events. The term 'random variable' can be misleading as it is not actually random or a variable, but rather it is a mapping or a function from possible outcomes (e.g., the possible upper sides of a flipped coin such as heads H {\displaystyle H} and tails T {\displaystyle T} ) in a sample space (e.g., the set { H , T } {\displaystyle \{H,T\}} ) to a measurable space (e.g., { 1 , 1 } {\displaystyle \{-1,1\}} in which 1 corresponding to H {\displaystyle H} and −1 corresponding to T {\displaystyle T} ), often to the real numbers.

Informally, randomness typically represents some fundamental element of chance, such as in the roll of a dice; it may also represent uncertainty, such as measurement error. However, the interpretation of probability is philosophically complicated, and even in specific cases is not always straightforward. The purely mathematical analysis of random variables is independent of such interpretational difficulties, and can be based upon a rigorous axiomatic setup.

In the formal mathematical language of measure theory, a random variable is defined as a measurable function from a probability measure space (called the sample space) to a measurable space. This allows consideration of the pushforward measure, which is called the distribution of the random variable; the distribution is thus a probability measure on the set of all possible values of the random variable. It is possible for two random variables to have identical distributions but to differ in significant ways; for instance, they may be independent.

It is common to consider the special cases of discrete random variables and absolutely continuous random variables, corresponding to whether a random variable is valued in a discrete set (such as a finite set) or in an interval of real numbers. There are other important possibilities, especially in the theory of stochastic processes, wherein it is natural to consider random sequences or random functions. Sometimes a random variable is taken to be automatically valued in the real numbers, with more general random quantities instead being called random elements.

According to George Mackey, Pafnuty Chebyshev was the first person "to think systematically in terms of random variables".