Difficulty: Easy
Correct Answer: 470
Explanation:
Introduction / Context:
Average equals total divided by count. With eight data points, careful addition is essential.
Given Data / Assumptions:
Concept / Approach:
Sum all values first, then divide by 8.
Step-by-Step Solution:
Verification / Alternative check:
Group sums for confirmation, for example (124 + 856) = 980 and (331 + 227) = 558 etc., leading to 3760 total.
Why Other Options Are Wrong:
Common Pitfalls:
Misadding or skipping a term which distorts the final mean.
Final Answer:
Discussion & Comments