Q. 1 - Elementary Statistics

Question

This problem is about variables.

a. What is a variable?

b. Identify two main types of variables.

c. Identify the two types of quantitative variables.

Step-by-Step Solution

Answer

(a) A variable is a property of people that differs from one person to the next.

(b) There are two types of variables:

      1. Quantitative variable

      2. Qualitative variable

(c) The two types of quantitative variables are:

       1. Discrete variable

       2. Continuous variable

Part (a) Step 1: Concept introduction

A word used to describe a form of data that consists of observations on only one feature or attribute is single variable data.

Part (a) Step 2: Explanation

Any attribute, number, or quantity that can be measured or counted is referred to as a variable. A data item is another name for a variable. Variables include age, sex, company income and expenses, country of birth, capital expenditure, class grades, eye colour, and vehicle type.

Part (b) Step 1: Concept introduction

Any attribute, number, or quantity that can be measured or counted is referred to as a variable 

Part (b) Step 2: Explanation

There are two types of variables:

Quantitative Variables are those whose values are determined by counting or measuring something. 

Variables that aren't measurement variables are referred to as qualitative variables. Their worth isn't determined by counting or measuring. Values that are used to identify persons in a table are known as designators.

Part (c) Step 1: Concept introduction

Quantitative Variables are those whose values are determined by counting or measuring something. 

Part (c) Step 2: Explanation

There are two types of quantitative variables: discrete and continuous variables.

Counts are represented using discrete variables (e.g. the number of objects in a collection).

Continuous variables are amounts that can be measured.