integration constantintegratorintegrodifferentiationintensityinter arrivalinteractioninteraction modelinteractive data analysisinterationinterblock informationinterceptintercoder agreementinterdecile rangeinterdependence analysisinterdependent functionintereffect orthogonalityinterferenceinterfractile rangeinterim analysisinternal additive consistency of estimatorsinternal least squaresinternational foreign trade statisticsinternational standardizationinterneighbor intervalinterpenetrating samplesinterpenetrating subsamplesinterpercentile distanceinterpolationinterpolation formulainterpolation methodinterpolation theoreminterquartile rangeintersectintersectionintersection methodintersection of eventsintersection of setsintertemporalintervalinterval estimateinterval estimationinterval functionintervention model analysisinterviewer biasinterviewer varianceintra block effectintra class correlationintrablock informationintraclassintraclass correlation coefficient