Discrete Variable: It is a variable whose value is obtained by counting. Examples: (i) Number of students present. (ii) Number of red marbles in a jar. (iii) Students' grade level. Continuous Variable: It is a variable whose value is obtained by measuring. Examples: (i) Height of students in class. (ii) Weight of students in class. (iii) Time it takes to get to school. (iv) Distance travelled between class. So, statement I and IV are examples of discrete variables.