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Table 2 Summary statistics for and correlation measures among distance measures

From: Dissimilar occupations and marital stability

  Summary statistics  
Distance measure Number combinations Mean Standard deviation Minimum Maximum
Abilities 126,253 0.1416 0.0527 0 0.4168
Activities 126,253 0.2217 0.0708 0 0.5679
Knowledge 126,253 0.1796 0.0694 0 0.5766
Skills 126,253 0.3014 0.0831 0 0.6630
Overall 126,253 0.4438 0.1218 0 1.0070
  Correlation structure  
Distance measure Abilities Activities Knowledge Skills Overall
Abilities 1.000     
Activities 0.701 1.000    
Knowledge 0.803 0.761 1.000   
Skills 0.590 0.647 0.656 1.000  
Overall 0.812 0.877 0.880 0.895 1.000
  1. These statistics are calculated prior to matching the distance measures to the PSID data. Hence they are not weighted to account for the prevalence of spousal pairings in occupation, i.e., the statistics treat all pairs as equally probable and attach equal weight. Our intention when reporting the measures of association is to show that each pair of measures is positively correlated and measures dissimilarity, but several pairs, such as Activities and Knowledge are far from perfectly correlated. Those two measures are capturing different dimensions of dissimilarity.