A survey gives family size 1-3, 3-5, 5-7, 7-9, 9-11 with frequencies 8, 9, 6, 2, 5. The mode is:
Correct Answer: 3.5
Subject: 2025
Explanation: • <b>Key Fact</b>: Apply the standard formula/method for <b>Mode of Grouped Data</b>.<br>• <b>Additional Info</b>: Keep units, signs and ratios consistent.<br>• <b>Why the other options are wrong</b>: They do not satisfy the calculation from the given data.<br>• <b>Exam Trick</b>: Write the formula first, then substitute values.<br>• <b>Final Answer</b>: 3.5.