Question

Question 1 Which of the following is a discrete random variable? A. O Gender of a Holland Lop rabbit. B. O Number of baby bunnies in a Holland Lop doe's nest. C. O Weight of a Holland Lop baby bunny.

Answer 1

Answer : B. Number of baby bunnies in a Holland Lop Doe's nest.

Explanation:

Attribute: A qualitative characteristic like gender, nationality, religion, grade in examination, blood group, beauty, defectiveness of an article produced by a machine called as attribute. Gender is not a variable. It is attribute.

Variable: A quantitative characteristic (which changes its value) like weight of person, examination marks, population of a country, profit of a salesman, is called as variable.

Further the variables can be divided into two categories: (1) Discrete and (ii) continuous. Definition: A variable taking only particular values is called as discrete variable. For example: Number of students in a class, number of articles produced by a machine, population of a country, number of workers in a factory etc. are discrete variables. Most of the discrete variables have integral values. Definition: A variable taking all possible values in a certain range is called as continuous variable. For example: Weight of a person, length of a screw produced by a machine, temperature at a certain place, agricultural production, electricity consumption of a family, speed of a vehicle are the examples of continuous variable.