Final Letter

Very soon, the U.S. Census Bureau will be calling you to conduct the final interview
for the Telephone Point of Purchase Survey (TPOPS). In this interview, as in previous
ones, you will be asked about a few purchases your household may have made
recently.
Data collected in TPOPS are used to update the Consumer Price Index (CPI). The
CPI is the most important tool used to measure how fast prices are rising or falling. It
directly affects wages and pensions. Your participation has been a valuable service to
your community and the country.
Your continued participation in this survey is vital to the accuracy of the CPI. Federal
law authorizes the collection of this information (Titles 15 and 29 of the United States
Code), and the Confidential Information Protection and Statistical Efficiency Act
(CIPSEA) requires us to keep all information about you and your household strictly
confidential, and to use that information for statistical purposes only.
On the back of this letter are answers to questions you may have about this survey. If
you would like more information, please go to the CPI-TPOPS respondent website at:
http://www.bls.gov/respondents/cpi/tpops
Thank you again for your cooperation and continued participation over the past year
in this important survey. We appreciate your help.
Sincerely,

W. John Layng
Assistant Commissioner for Consumer Prices and Price Indexes

7421-4(L) (6-2010)

FREQUENTLY ASKED QUESTIONS
WHAT IS THE PURPOSE OF THE POINT OF PURCHASE SURVEY?
The purpose of the Point of Purchase Survey is to provide information on the
stores and businesses where people shop and the products they buy. This
information is used to update the Consumer Price Index (CPI) or the "cost of living
index." This index directly affects almost everyone at one time or another.
The President, the Congress, and the Federal Reserve use trends in the cost of
living to aid in formulating fiscal and monetary policies. Adjustments to wages,
Social Security payments, retirement benefits and other compensation such as
child support and payments received by millions of Americans are based on
changes in the CPI. In addition, businesses, labor organizations and private
citizens use the index as a guide in making economic decisions.
HOW WILL THE INFORMATION BE USED?
In order for the Bureau of Labor Statistics (BLS) to update the CPI, it is necessary
to maintain an up-to-date list of the stores and businesses where people shop. The
U.S. Census Bureau conducts the Point of Purchase Survey to provide statistical
data needed to update this list.
WHY WAS I SELECTED?
While participation is voluntary and there are no penalties for not answering
questions, it is very important that we have your cooperation in the survey to
ensure the validity and accuracy of the CPI. Your household was selected
randomly from a list of phone numbers. Information that you provide will be used
only to identify the stores and businesses where Americans shop and the products
they buy.
WHAT CONFIDENTIALITY PROTECTION DO I HAVE?
The confidentiality of the information you provide is assured to the full extent
permitted by law in accordance with the Privacy Act of 1974 and the Confidential
Information Protection and Statistical Efficiency Act of 2002 (Title 5 of Public Law
107-347). The information you provide will only be used for statistical purposes.
WHAT LAWS AUTHORIZE YOU TO CONDUCT THIS SURVEY?
This survey is authorized by the Office of Management and Budget under Project
1220-0044. Title 29, Section 2 of the United States Code authorizes the BLS to
conduct household studies. Title 15 of the United States Code authorizes the
Census Bureau to conduct surveys for other federal agencies.
HOW LONG DOES THIS INTERVIEW TAKE?
The typical interview lasts between 7 and 15 minutes.

7421-4(L) (6-2010)