Chapter 2, Problem 1RP

This problem is about variables.

1. a. What is a variable?
2. b. Identify two main types of variables.
3. c. Identify the two types of quantitative variables.

To determine

To define: variables

Answer to Problem 1RP

Variables are the characteristics of the individuals of the population being studied, and it can vary one entity to another.

Explanation of Solution

Variables: A variable is the characteristic of the individuals of the population, which an investigator is interested to study.

A variable can vary one entity to another. It is an attribute to describe any characteristic of the individuals being studied.

To determine

To identify: The two main types of variables

Answer to Problem 1RP

The two main types of variables is qualitative and quantitative

Explanation of Solution

Mainly one can classify a variable into two parts. One is qualitative variable and another is quantitative variable.

Qualitative data are non-numerical measures such as characteristics, attributes or labels whereas quantitative data are numerical measures on which arithmetic operations are possible.

Eye color is an example of qualitative variable and height is an example of quantitative variable

To determine

To identify: The two types of quantitative variables

Answer to Problem 1RP

The two types of quantitative variables is discrete and continuous

Explanation of Solution

Two types of quantitative variables :

Discrete Variable: It is a quantitative variable. It consists either a finite number of possible values or countable number of possible values. Discrete variable can’t take every possible value between two possible values.

Continuous Variable: It is a quantitative variable. It consists an infinite number of possible values that are not countable. Continuous variable can take every possible value between any two possible values.