CourseWare Table of Contents    DATA FILES

INTRODUCTION

DATA COLLECTION

DATA FILES

Structure of the Data Files

Structure of the Data Files
Relationship Between the Six NPTS Data Files
Typical NPTS Household
When is a Record on the File?

Notes on the Files

Household Member Variables
Travel Day and Travel Period
Segmented Trips
Trips not Segmented
Relationship of Travel Day Trips and Segmented Trips

Types of Variables on the Dataset

Types of Variables on the Dataset
The NPTS Variables
Compatibility With the 1990 NPTS
SAS
ASCII
Data Dictionary

Points to Remember

Points to Remember

MAKING IT USEABLE

ANALYSIS