An independent variable can be any of a given set of values while a dependent variable is represented as a function of another variable.
Extraneous variable a.k.a. Confounding vaiable is a variable that affects an independent variable n also afects a dependent variable at d same time confounding relatnship btn the independent and dependent variable. Mediating variable a.k.a. Intervening variable, it is a variable forming a link btn two variables that are causualy conected.
A categorical variable (also known as a discrete variable) is one whose range is countable; e.g. the variable answ has values [yes, no, not sure]. answ is a categorical variable with range 3.A continuous variable is one which is not categorical; e.g. weight is a continuous variable which can take any value between 0 and 1000 kg (say) for a human being.
The value of a random variable that is uniformly distributed between 20 and 100 can be calculated by calculating the sum of numbers from 20 to 100 and dividing it by the difference between 100 and 20. The resulting mean is 58.5.
A random variable is a variable which can take different values and the values that it takes depends on some probability distribution rather than a deterministic rule. A random process is a process which can be in a number of different states and the transition from one state to another is random.
It is a variable resistor. Basically, the same as when you turn up or down the heat on an electrical oven or radio.
its the colour of the fixed and the variable we define it by its power and name
Variable resistors means that a resistor which can change its resistance by control by any person or it self and fixed resistor means that it can not change its value.
A rheostat and a potentiometer are two different applications for the same device, a variable resistor. These devices have three terminals. Two terminals are connected across the complete resistor, while the third terminal is connected to a controllable wiper. The variable resistance is provided between the wiper terminal and either one of the other two terminals.When used to control current, it is called a rheostat. When used to control voltage, it is called a potentiometer.
These devices could, in theory, be interchangeable. Variac is a (typically single coiled) variable transformer, whereas rheostat is a variable resistor. Although they may look just the same, they differ in one aspect - wire resistance. It should be as low as possible for variac, but it can differ on rheostats. So-you can use wire rheostat as a low efficiency variac and you can use wire variac as ridiculously huge rheostat, resistive range of which serves no practical purpose.
A potentiometer is a variable resistor, while a voltmeter is a device that measures voltage.
To control the value of resistance in the circuit.e.g. In a simple circuit consisting of a cell/battery/power supply, a bulb and a rheostat, the more resistance you add with the rheostat gives a dimmer bulb, whereas you can decrease the resistance and resulting in a brighter bulb.Another AnswerVariable resistors have three connections: one at opposite ends, and the other connected the 'wiper'.Variable resistors can be used as rheostats or potentiometers. 'Rheostat' and 'potentiometer' are the names we give to how variable resistors are used; they are not the names given to the device itself.A rheostat is a variable resistor used to control current. To do this, it is connected in series with the load, and the connection is made between one of the outer terminals and the wiper terminal.A potentiometer is a variable resistor used to control voltage across a load. To do this, the supply voltage is connected between the two outer terminals, and the load is connected between one of the outer terminals and the wiper terminal.
Resistors are either fixed value, or variable. A variable resistor has three terminals; one at either end and one attached to a moving 'wiper', and can be connected either as a potentiometer or as a rheostat. So 'potentiometers' and a 'rheostats' are different applications for variable resistors. A potentiometer uses all three terminals, and is used to control levels of potential; whereas a rheostat uses just two of the three terminals, and is used to control current.
Resistors are ohmic and fixed whereas metrosils are non ohmic and variable - version of a varistor.
difference between fixed and variable inputs
what is the difference between a variable and a control
The difference between a Transistor and a Resistor is that a transistor is designed to amplify the electrical current, whereas a Resistor is designed to reduce the electrical current.