Neco 2025 Mathematics Question 7

Practice objective / multiple choice question 7 from the 2025 Neco Mathematics examination.

Neco 2025 Mathematics Objective / Multiple Choice Hard Difficulty

Question 7 NECO • 2025 • MATHEMATICS • objective

In a class, 30 students sat for Exam\,1 and the mean score was \(68\) with a variance of \(36\). All 30 students also sat for Exam\,2, so there are a total of 60 scores. The combined mean of the two exams (i.e., the mean of the 60 scores) is \(72\) and the combined variance is \(49\). Determine the mean score of Exam\,2 and the variance of the scores in Exam\,2.

Correct Answer A. Mean = 76, Variance = 30

B. Mean = 74, Variance = 36

C. Mean = 78, Variance = 24

D. Mean = 70, Variance = 40

Correct Answer

Correct Option:

Mean = 76, Variance = 30

This is Neco 2025 Mathematics Question 7. It is one of the objective questions from the 2025 Neco Mathematics examination.

Difficulty level: Hard .

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