Derived Vaiable in IPEDS在美国派生变量.pptVIP

SHEEO/NCES Network Conference 3/31/04 IPEDS Focus Session 2: Derived Variables in IPEDS SHEEO/NCES Network Conference IPEDS Workshop 3/31/04John MilamHigherEd.org, Inc. Project Description NCES project to add value to IPEDS by creating new derived calculated variables Derived variables will make it quicker for users to get the data they need without lots of calculations; will be more than subtotals Derived variables address policy questions Parallel to NPEC Data Feedback project Parallel to improvements to PAS Derived variables are required for 2 new tools - IPEDS DAS Peer Tool for Novices Reviewed relevant literature to identify variables that have been used to address policy issues in postsecondary education Reviewed IPEDS surveys Prepared working list of variables Obtained preliminary review comments from NCES the IR association communities Held IPEDS Technical Review Panel2/4-5/04 to identify issues revise list Reviewed imputation perturbation issues NCES upgraded PAS navigation/subtotals NCES review of new variables Preparing report of recommendations Will post proposal on IPEDS website with period for commentary feedback Will integrate comments w/ NCES decisions Will create definitions SQL Will integrate variables into applications Derived variables must suit the tools All will be available in the PAS/DCT Subset in the Peer Tool for Novices Subset in the IPEDS DAS When is a calculation so onerous it needs to be created as a new variable? Need variables to produce ED Tab tables w/ the IPEDS DAS Handling single-record vs multi-record data; hierarchical or qualifying When is a derived variable a variable vs. a value label? When to use data vs. percentages? What will the tools provide automatically? Display of means, counts, sums Subtotals for qualifying variables data whenever possible Student FTE by level (new method) Total full-time faculty FTE for non-medical non-medical (new method) New total with definitions for “core revenues” “c