Introduction
Welcome to today’s tutorial on NECO Mathematics past questions.
In this lesson, we will solve a statistics question involving the calculation of mean scores and the total number of students. This concept frequently appears in May/June examinations and is essential for students preparing for senior secondary certificate exams.
Let’s get started with the questions and answers.
The Question
Problem:
Twenty girls and Y boys sat for an examination.
The mean score obtained by the girls was 52, and the mean score obtained by the boys was 57.
The total score of both the girls and boys combined was 2750.
Find Y (the number of boys who sat for the examination).
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Conclusion
Mastering mean score calculations is vital for success in NECO Mathematics exams. This example shows how to carefully apply formulas to find missing data in real exam scenarios.
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