VARIABLE A symbol which takes various numerical values is called a variable.

CONSTANT A symbol having a fixed numerical value is called a constants.

Constant A symbol having a fixed numerical value is called a constant.

An equation is true for all values of its variables

The value of a variable is fixed.

Consider the following statement: 1. A continuous random variable can take all values in an interval. 2. A random variable which takes a finite number of values is necessarily discrete. 3. Construction of a frequency distribution is based on data which are discrete. Which of the above statements are correct ?

The variable resistance is called

IDENTITY An identity is an which is true for all values of the variables).