Waec Model Questions Vol1 2025 Mathematics Question 8

Practice objective / multiple choice question 8 from the 2025 Waec Model Questions Vol1 Mathematics examination.

Waec Model Questions Vol1 2025 Mathematics Objective / Multiple Choice Hard Difficulty
Question 8 WAEC_MODEL_QUESTIONS_VOL1 • 2025 • MATHEMATICS • objective

A class of students took a mathematics test. The mean score was 75, and the variance was 64. If one student scored 90, what would be the new mean score if this student's score is included in the calculation?

Answer Options

Correct Answer A. New mean ≈ 75.48 (assuming \(n = 30)\)
B. New mean ≈ 76.00 (assuming \(n = 30)\)
C. New mean ≈ 74.50 (assuming \(n = 30)\)
D. New mean ≈ 75.00 (assuming \(n = 30)\)
Correct Answer
A
Correct Option:
New mean ≈ 75.48 (assuming \(n = 30)\)

About This Question

This is Waec Model Questions Vol1 2025 Mathematics Question 8. It is one of the objective questions from the 2025 Waec Model Questions Vol1 Mathematics examination.

Difficulty level: Hard .

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