Measuring the User Experience, 2nd Edition

Chapter 2

Background

Contents

2.1 Independent and Dependent Variables

2.2 Types of Data

2.2.1 Nominal Data

2.2.2 Ordinal Data

2.2.3 Interval Data

2.2.4 Ratio Data

2.3 Descriptive Statistics

2.3.1 Measures of Central Tendency

2.3.2 Measures of Variability

2.3.3 Confidence Intervals

2.3.4 Displaying Confidence Intervals as Error Bars

2.4 Comparing Means

2.4.1 Independent Samples

2.4.2 Paired Samples

2.4.3 Comparing More Than Two Samples

2.5 Relationships Between Variables

2.5.1 Correlations

2.6 Nonparametric Tests

2.6.1 The χ² Test

2.7 Presenting your Data Graphically

2.7.1 Column or Bar Graphs

2.7.2 Line Graphs

2.7.3 Scatterplots

2.7.4 Pie or Donut Charts

2.7.5 Stacked Bar or Column Graphs

2.8 Summary

This chapter covers background information ...