USPS Suite and Apartment Number Errors

Question 1

Compare the two address entries and identify any error:
Entry 1: 450 Maple Ave, Apt 3B, Boston, MA 02101
Entry 2: 450 Maple Ave, Apt 3D, Boston, MA 02101

Accepted Answer

There is an error in the apartment number

Answer

Entry 1 shows 'Apt 3B' while Entry 2 shows 'Apt 3D,' indicating a letter substitution error in the apartment designation.

Question 2

Which type of error is present when comparing 'Apt 7' with 'Apt 17'?

Accepted Answer

Insertion error

Answer

An insertion error occurs when an extra character is added; 'Apt 17' contains an inserted digit '1' not present in 'Apt 7.'

Question 3

A data entry clerk copies an address record:
Original: 1234 Oak Street, Suite 200, Chicago, IL 60601
Copy:     1234 Oak Street, Suite 2000, Chicago, IL 60601
What type of error was made?

Accepted Answer

Insertion error in the suite number

Answer

An extra zero was inserted into the suite number, changing '200' to '2000,' making this an insertion error.

Question 4

Compare these two mailing records:
Record 1: 789 Elm Street, Floor 3, Room 14, New York, NY 10001
Record 2: 789 Elm Street, Floor 3, Room 41, New York, NY 10001
The discrepancy is:

Accepted Answer

A transposition error in the room number

Answer

The room number '14' in Record 1 becomes '41' in Record 2, with digits 1 and 4 switched in position — a classic transposition error.

Question 5

When comparing suite numbers in two address records, which pair represents a transposition error?

Accepted Answer

Suite 301 vs Suite 310

Answer

In 'Suite 310,' the digits 0 and 1 from 'Suite 301' have been switched in position, which is the definition of a transposition error.

USPS Error Detection Test Practice Test

USPS Error Detection Test Practice Test

USPS Suite and Apartment Number Errors