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Chapter 2: Q. 2 (page 88)

This problem is about data.

a. What are data?

b. How is data type determined?

Short Answer

Expert verified

(a)A set of values assigned to variables is referred to as data.

(b) There are four types of data:

1. Quantitative data

2. Qualitative data

3. Discrete data

4. Continuous data.

Step by step solution

01

Part (a) Step 1: Concept introduction

Single variable data is a term that refers to a sort of data that contains observations on only one feature or attribute.

02

Part (a) Step 2: Explanation

Individual pieces of factual information are recorded and used for analysis as data. The conclusions of analysis of data, while also their interpretation and presentation, are referred as statistics.

03

Part (b) Step 1: Concept introduction

The primary goal of single variable data is to describe, rather than to investigate causes and linkages.

04

Part (b) Step 2: Explanation

There are four types of data:

1. Quantitative data refers to the information whose value is represented in counted or digits, with each data set having a unique numerical value.

2. Qualitative data is factual and conceptual data gathered through questionnaires, conversations, or observation. Analyzing qualitative data allows us to study concepts and better explain quantitative results.

3. Discrete data is a count based on an integer with a finite number of possible values. This type of information cannot be broken down into smaller chunks.

4. Continuous data: Continuous data are data that can acquire any value. Continuous data includes things like height, weight, temperature, and length.

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Some users of statistics prefer pie charts to bar charts because people are accustomed to having the horizontal axis of a graph show order. For example, someone "Republican" is less than "Other" because "Republican" is shown to the left of "Other" on the horizontal axis. Pie charts do not lead to such inferences. Give other advantages and disadvantages of each method.

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