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Character Transposition Errors Flashcards

6 cards from real USPS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. When comparing an original address to one entered into a system, which of the following pairs BEST demonstrates a numeric transposition error in the street number?

    Answer: Original: 6519 MAPLE DR, System: 6591 MAPLE DR

    A transposition error occurs when two adjacent characters are swapped. In the correct answer, the '1' and '9' in the street number '6519' have been swapped to '6591'. The other options show different types of errors, such as multiple errors or non-adjacent character swaps.

  2. A data entry operator is tasked with keying in addresses from handwritten forms. Which of the following entered ZIP codes is most likely the result of a character transposition error from the original '80218-3456'?

    Answer: 80218-3546

    A transposition error involves swapping two adjacent characters. In this case, the '5' and '4' in the ZIP+4 code '3456' were swapped to become '3546'. The other options represent substitution errors or non-adjacent transpositions.

  3. During a quality check, you are comparing two lines of data. Which statement accurately identifies the error type between the Correct and Incorrect strings? Correct: 4713-B NW 16TH PL Incorrect: 4173-B NW 16TH PL

    Answer: A transposition error in the street number.

    The error is a transposition because the adjacent digits '7' and '1' in the street number '4713' have been swapped to '4173'. All other parts of the address line are identical.

  4. An automated sorting machine flags an address for manual review. The system-read address is '9821 S MAIN ST' but the database suggests a potential match to '8921 S MAIN ST'. What specific type of error has most likely occurred?

    Answer: Character Transposition

    The error is a character transposition because the first two adjacent digits, '9' and '8', have been swapped. This is a common type of data entry error that automated address validation systems are designed to catch.

  5. Which of the following scenarios describes a classic character transposition error that could delay mail processing?

    Answer: An operator types '921 N PINE ST' instead of '291 N PINE ST'.

    This is a classic transposition error where the adjacent digits '9' and '2' at the beginning of the street number have been swapped. The other options describe a substitution ('S' for '5'), an incorrect street suffix, and an insertion error.

  6. You are comparing a scanned address with the original document. At which character position does the first transposition error begin in Line B when compared to Line A? Line A: 53891-6770 CHAMBERS RD Line B: 53819-6770 CHAMBERS RD

    Answer: Position 4

    The error begins at the 4th character position. In Line A, the 4th character is '9' and the 5th is '1'. In Line B, these two adjacent characters are transposed, so the 4th character is '1' and the 5th is '9'. Therefore, the error starts at position 4.