Difficulty: Easy
Correct Answer: Representative (average observed) time
Explanation:
Introduction / Context:
Understanding the ladder from observed time to standard time is essential: observed → representative → normal → standard. Each step formalises adjustments for performance and allowances.
Given Data / Assumptions:
Concept / Approach:
Representative time is the mean (or statistically suitable average) of observed times after eliminating abnormal values. Normal time = representative time * rating factor. Standard time = normal time + allowances.
Step-by-Step Solution:
Verification / Alternative check:
Time study manuals explicitly define these terms in the same sequence.
Why Other Options Are Wrong:
Standard/Normal are later-stage results; allowance time is only a component.“Rated time” is ambiguous and not the standard terminology here.
Common Pitfalls:
Confusing “normal” with “observed”; failing to filter outliers before averaging.
Final Answer:
Representative (average observed) time
Discussion & Comments