USPS Error Detection Test Data Entry Discrepancy Checks Questions and Answers 1 — Questions and Answers
Question 1: A data entry operator is inputting a tracking number. The correct number is `940011O935` but it is entered as `940011093S`. This type of discrepancy, where characters are replaced by visually similar ones, is best described as what kind of error?
- Transposition Error
- Omission Error
- Substitution Error (Correct answer)
- Insertion Error
Correct answer: Substitution Error
A substitution error occurs when one character is replaced with another. In this case, the letter 'O' was replaced with the number '0', and the number '5' was replaced with the letter 'S', which are common look-alike substitutions.
Question 2: A reference container ID is `AD78831B902`. Which of the following entered IDs contains exactly two errors when compared to the reference ID?
- `AD79831B902`
- `AD78831C912` (Correct answer)
- `AD78831B90`
- `AD78831B902X`
Correct answer: `AD78831C912`
Comparing `AD78831C912` to the reference `AD78831B902`, the character 'C' is an error (should be 'B') and the character '1' is an error (should be '0'). This totals two distinct errors. The other options contain only one error each.
Question 3: A clerk is verifying a short manifest list against system entries. Which of the following line items shows a discrepancy between the Manifest Record and the System Entry?
- Manifest: `XB455198Z`, System: `XB455198Z`
- Manifest: `PL200987K`, System: `PL200987K`
- Manifest: `GH773411P`, System: `GH77341LP` (Correct answer)
- Manifest: `TR516023F`, System: `TR516023F`
Correct answer: Manifest: `GH773411P`, System: `GH77341LP`
In line item C, the Manifest Record shows the number '1' in the seventh position, while the System Entry shows the letter 'L' in the same position. This is a single-character substitution error, creating a discrepancy.
Question 4: In high-accuracy data entry environments, a "double-entry" or "key-verify" system is often used. What is the primary principle behind this method for reducing discrepancies?
- Two different operators enter the same data, and the system flags any mismatches for review. (Correct answer)
- The system automatically corrects common spelling and numerical errors using a predefined dictionary.
- A single operator enters the same data twice to ensure they remember it correctly.
- The data is entered once and then visually verified on the screen by the same operator.
Correct answer: Two different operators enter the same data, and the system flags any mismatches for review.
Double-entry verification works on the principle that it is highly unlikely for two different individuals to make the exact same random error in the same place. The system compares the two entries, and any discrepancy points to a potential error that a supervisor must then resolve.
Question 5: When performing a manual data entry check, you find a clear discrepancy between a handwritten form and the data entered into the system. What is the most appropriate immediate next step?
- Assume the system is correct and ignore the handwritten form.
- Correct the system data to match the handwritten form without further investigation.
- Delete the entire record from the system and re-enter it from scratch.
- Flag the entry for review by a supervisor or according to standard operating procedure. (Correct answer)
Correct answer: Flag the entry for review by a supervisor or according to standard operating procedure.
The standard procedure for handling discrepancies is not to make an assumption or an immediate correction, as the handwritten form could be illegible or there could be a specific rule for handling such cases. The correct action is to escalate the issue by flagging it for review according to established protocols to ensure final accuracy.
Question 6: An international package requires a 13-character customs ID. Compare the ID on the document to the one entered in the system. How many characters are in error? Document ID: `UA9I8827S31US` System ID: `UA918827531US`
- One
- Two (Correct answer)
- Three
- Four
Correct answer: Two
Comparing the two strings character by character: `UA9I8827S31US` (Document) `UA918827531US` (System) The fourth character is 'I' on the document and '1' in the system (one error). The ninth character is 'S' on the document and '5' in the system (a second error). There are a total of two errors.
USPS Error Detection Test Data Entry Discrepancy Checks Questions and Answers 1
A data entry operator is inputting a tracking number.
The correct number is `940011O935` but it is entered as `940011093S`.
This type of discrepancy, where characters are replaced by visually similar ones, is best described as what kind of error?