1. PPI Quality Assessment Framework
Irwin Gerduk

2. PPI Survey Standardization
Types of price
Pricing methodology
Sample design
Monthly pricing procedures
Data table formats
Data collection methods

3. Tools for Achieving Standardization
PPI Quality Assessment Framework
Initial industry surveying manual
Data initiation manual
Monthly pricing manual
Index methodology, index calculation, index review, and data dissemination manual

4. Framework: Major Concepts
Output price
Transaction price
Shipment price
Representative of current period production
Constant quality
Monthly price measure

5. Framework: Statistical and Sample Design Issues
Sampling frame
Sample design
Response rates
Planned publication detail
Item specification

6. Scoring System Type A Deflator – Score of above 90
Type B Deflator – Score of 70 to 90
Type C Deflator – Score of below 70

7. Assessments performed:
At completion of the design phase
At completion of initial data initiation
Periodically during the multi-year index calculation period

8. PPI vs. ATA

9. PPI vs. ATA

10. Domestic Scheduled Passenger Air Transportation
Enormous upward bias in the PPI index in the 1990 – 2003 period
PPI and ATA indexes largely similar in the 2004 – 2007 period
Neither series is quality adjusted
Normalized PPI score improved from 65 (Type C deflator) to 79 (middling Type B)