costs that are not included here, including costs for development, research, testing, and retooling.

The sample sizes presented here are very general estimates of the effective sample sizes (net of a 25% nonresponse) that might be possible while remaining budget neutral.

To summarize, it is important to emphasize that extensive testing is necessary to determine which of the collection methods and their variants contained in the prototypes can be made operational. The prototypes embody the panel’s informed opinion about the best avenues to explore, not options from which to choose a survey design.

Using the Tablet PC for Self-Administered Data Collection

The panel proposes the use of tablet computers with wireless phone cards for supported self-administered data collection in all three prototypes as a way to solve some key problems with the CE. Lightweight and easy-to-use tablets represent stable (robust) technology, are commonplace, feature more than sufficient computing power, and are economical in price. In fact, their price continues to fall over time. This section provides more detail on the use and management of these tablets and the support system for their use.

For this data collection effort, a low-end tablet is likely to suffice. Their

Design C by Components Current CE by Components
Base Supported Journal Household Profile Total Diary Interview Total
25,000 11,000 7,000 25,000 7,100 7,100 14,200
25,000 11,000 21,000 57,000 14,200 35,500 49,700
0 44,000 168,000 212,000 14,200 340,800 355,000
0 $150 $180 $108 0 0 0
$8,100,000 $5,800,000 $6,700,000 $20,600,000 $2,833,822 $13,086,524 $15,920,345
$324 $529 $962 $824 $399 $1,843 $1,121

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