Statistics — JAMB Mathematics Past Questions
Statistics is one topic inside the JAMB Mathematics syllabus, and drilling it on its own is usually faster than revising the whole subject again. Below: which JAMB years have examined it, then real Statistics questions with worked answers.
When JAMB examined Statistics
Statistics questions appear in our bank for the JAMB years below. This is taken from the questions themselves, not from a syllabus outline — so if a year is listed, this topic was genuinely examined that year.
A topic that keeps reappearing is a topic JAMB keeps testing. Newer years matter most, because question style drifts.
Try Statistics questions
Real Mathematics questions tagged to Statistics. The first is worked through completely so you can see how our explanations read — the rest you can attempt now and check inside the app.
Instruction: Choose the correct option.\n\nA student scored the following marks in an examination:\nMathematics: 62\% (credit 5), Physics: 49\% (credit 4), Engineering Drawing: 72\% (credit 5), English: 58\% (credit 3), General Studies: 21\% (credit 1).\n\nDetermine the student's average grade.
- A 58.9\%
- B 59\%
- C 60\%
- D 61\%
Answer: A
Weighted average = \(\frac{\sum (\text{score} \times \text{credit})}{\sum \text{credits}}\)\n\(= \frac{62\cdot5 + 49\cdot4 + 72\cdot5 + 58\cdot3 + 21\cdot1}{5 + 4 + 5 + 3 + 1} = \frac{310 + 196 + 360 + 174 + 21}{18} = \frac{1061}{18} \approx 58.94\%\)
Find the standard deviation of the numbers 1, 7, 6, 3, 2, 5, 8, 2, 9.
- A 2\sqrt{5}
- B \sqrt{6}
- C 7
- D \sqrt{7}
Answer and full explanation are inside the app.
Check the answerTable shows marks obtained by 30 students in an examination. If the average score of the students was 3.2, find the value of K correct to the nearest whole number
- A 7
- B 5
- C 4
- D 6
Answer and full explanation are inside the app.
Check the answerOther Mathematics topics
Drill Statistics until it stops costing you marks
Filter Mathematics practice to Statistics alone, work through it with worked explanations, and let the analytics show you when it has actually stuck. Free to start.
Statistics in JAMB Mathematics: common questions
Are Statistics questions free?
Yes. Create a free account and every Mathematics question tagged to Statistics is available with a worked explanation. Past questions are not paywalled.
Is Statistics really examined?
Yes. Statistics appears in our bank across 11 JAMB years, taken from the questions themselves rather than a syllabus outline.
Can I practise Statistics on its own?
Yes. JambUp lets you filter Mathematics questions to a single topic, so you can drill Statistics until it stops costing you marks, then move on to the next weak area.