Leaving Cert Maths: Statistics
How often Statistics comes up on the Maths papers, every year it was asked, and questions to try.
HL Asked on 10 of the last 10 Higher Level papers, most recently in 2026. banker
OL Asked on 10 of the last 10 Ordinary Level papers, most recently in 2026. banker
FL Asked on 7 of the last 7 Foundation Level papers, most recently in 2026. banker
Quick ones on Statistics.
- 4
- 5
- 20
- 99.7%
- 95%
- 68%
- 5
- 7
- 1
Show the answers
(a) 5
(b) 68%
(c) 5
Higher Level
Asked on 10 of the last 10 Higher Level papers, most recently in 2026. banker
Every paper, year by year
| Year | Where it came up |
|---|---|
| 2026 | Q1, Q2, Q8, Q10 |
| 2025 | Q4, Q10 |
| 2024 | Q1, Q7 |
| 2023 | Q5, Q8 |
| 2022 | Q5, Q8, Q10 |
| 2021 | Q8 |
| 2019 | Q8 |
| 2018 | Q2, Q8 |
| 2017 | Q2, Q8 |
| 2016 | Q9 |
Links open the State Examinations Commission’s paper for that year.
More Statistics questions
Statistics, 2 marks
In a normal distribution, about 95% of data lies within …
- 1 standard deviation of the mean
- 3 standard deviations of the mean
- 2 standard deviations of the mean
Show the answer
2 standard deviations of the mean
The empirical rule: about 68% within 1 SD, 95% within 2 SD and 99.7% within 3 SD of the mean.
Statistics, 2 marks
Standard normal: P(Z < 0) = ?
- 1
- 0.5
- 0
Show the answer
0.5
The standard normal curve is symmetric about 0, so exactly half the area is to the left of 0.
Statistics, 2 marks
A sample where every member has an equal chance of selection is a …
- simple random sample
- convenience sample
- quota sample
Show the answer
simple random sample
Every member has the same chance of being chosen, which helps avoid bias in the sample.
Ordinary Level
Asked on 10 of the last 10 Ordinary Level papers, most recently in 2026. banker
Every paper, year by year
| Year | Where it came up |
|---|---|
| 2026 | Q5, Q9 |
| 2025 | Q1, Q6, Q8 |
| 2024 | Q1, Q5, Q7 |
| 2023 | Q3, Q4, Q9 |
| 2022 | Q3, Q4, Q7, Q10 |
| 2021 | Q5, Q7 |
| 2019 | Q1, Q7, Q8 |
| 2018 | Q7, Q9 |
| 2017 | Q5, Q9 |
| 2016 | Q5, Q8 |
Links open the State Examinations Commission’s paper for that year.
More Statistics questions
Statistics, 2 marks
Find the mean of 4, 7, 9, 12.
- 7
- 32
- 8
Show the answer
8
Add them: 4 + 7 + 9 + 12 = 32. Divide by how many there are: 32 ÷ 4 = 8.
Statistics, 2 marks
Find the mode of 2, 3, 3, 5, 7.
- 5
- 3
- 4
Show the answer
3
The mode is the value that appears most often. 3 appears twice, the others once.
Statistics, 2 marks
Find the median of 4, 8, 2, 10, 6.
- 6
- 8
- 2
Show the answer
6
Put them in order first: 2, 4, 6, 8, 10. The middle value is 6.
Foundation Level
Asked on 7 of the last 7 Foundation Level papers, most recently in 2026. banker
Every paper, year by year
| Year | Where it came up |
|---|---|
| 2026 | Q2, Q3, Q7 |
| 2025 | Q1, Q9 |
| 2024 | Q2, Q4, Q5 |
| 2023 | Q1, Q5 |
| 2022 | Q1, Q9 |
| 2021 | Q1, Q11 |
| 2019 | Q10 |
Links open the State Examinations Commission’s paper for that year.
More Statistics questions
Statistics, 2 marks
Find the mode of 3, 5, 5, 7, 9.
- 9
- 7
- 5
Show the answer
5
The mode is the value that appears most often. 5 appears twice.
Statistics, 2 marks
Find the mean of 4, 6, 8, 10.
- 6
- 7
- 28
Show the answer
7
Add them: 4 + 6 + 8 + 10 = 28. Divide by how many there are: 28 ÷ 4 = 7.
Statistics, 2 marks
Find the range of 12, 3, 20, 8.
- 17
- 20
- 9
Show the answer
17
Range = biggest − smallest = 20 − 3 = 17.