(main)[2]
Calculate $y$.
Mathematics 0580 · IGCSE · Averages and measures of spread
Averages and measures of spread — practice question
Jim achieves the following marks in 8 tests: $7, 8, 8, y, 6, 9, 10, 5$. His average mark is $7.5$.
Worked solution & mark scheme
This 2-mark question has a full step-by-step worked solution and mark scheme. One marking point: “M1 for 7.5 \times 8 or for (7 + 8 + 8 + y + 6 + 9 + 10 + 5) \div 8 = 7.5 or a stronger equivalent oe” …
- Full mark scheme, point by point
- Step-by-step worked solution
- Write your answer & get it marked instantly by AI