Book contents
- Frontmatter
- Contents
- List of Tables
- List of Figures
- Abbreviations and Symbols
- Preface and Acknowledgments
- INTRODUCTION: HOMOGENEITY AND DIVERSITY IN EUROPE
- Part I Framework
- Part II Evidence
- Part III Toward an Explanation
- CONCLUSION: FROM TERRITORIAL TO FUNCTIONAL POLITICS
- Appendix 1 Party Codes
- Appendix 2 Territorial Units
- Appendix 3 Computations
- Appendix 4 Country Specificities
- Appendix 5 Sources
- References
- Index
- Cambridge Studies in Comparative Politics
Appendix 3 - Computations
Published online by Cambridge University Press: 02 December 2009
- Frontmatter
- Contents
- List of Tables
- List of Figures
- Abbreviations and Symbols
- Preface and Acknowledgments
- INTRODUCTION: HOMOGENEITY AND DIVERSITY IN EUROPE
- Part I Framework
- Part II Evidence
- Part III Toward an Explanation
- CONCLUSION: FROM TERRITORIAL TO FUNCTIONAL POLITICS
- Appendix 1 Party Codes
- Appendix 2 Territorial Units
- Appendix 3 Computations
- Appendix 4 Country Specificities
- Appendix 5 Sources
- References
- Index
- Cambridge Studies in Comparative Politics
Summary
Based on Percentage Distribution of Votes by Parties
Mean absolute deviation: MAD = Σ | X – √ | / n (also called “index of variation” [Rose and Urwin 1975: 24])
Mean squared deviation: MSD = Σ (X – √)² / n
Variance: S² = Σ (X – √)² / n – 1
Standard deviation: S = √ S² or S = √ Σ (X – √)² / n – 1
Lee index: LEE = Σ | X – √ | / 2
Variability coefficient: CV = S / √
IPR = √ n Σ | X – √ | / (2 (n – 1) Σ X)
Based on Percentages of Parties' Vote Distribution by Constituencies
Cumulative regional inequality index: CRII = 1/2 Σ | votes – voters | (not applicable to turnout).
The formula is divided by 100 to vary between 0 and 1 (Rose and Urwin 1975). When voters' figures are not available, electorate figures are used.
All Constituencies versus Constituencies in Which the Party Is Present Only
For party support, all previous indices have been computed (1) on the total number of constituencies (party not present = 0) and (2) on the constituencies in which the party was present only (party not present = system missing). This distinction does not apply to the CRII or to turnout figures.
Territorial Coverage by Parties
The simplest measure used to assess the spread of parties across regions is the number of constituencies in which a party is present (nominator) as a percentage of the total number of constituencies (denominator).
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- Information
- The Nationalization of PoliticsThe Formation of National Electorates and Party Systems in Western Europe, pp. 313 - 315Publisher: Cambridge University PressPrint publication year: 2004