Diese Aufgaben gibt es in ihrer Originalsprache.
GCSE Maths Foundation: Statistics practice questions
Ten free GCSE Maths Foundation tier questions on mean, median, mode, range, pie charts, frequency tables, scatter graphs and stem-and-leaf diagrams, each with a worked solution. Suitable for AQA, Edexcel and OCR.
Originale Aufgaben von Studoli-Lehrkräften im Stil der Prüfung GCSE. Es sind keine offiziellen Prüfungsaufgaben.
Timed mode
10 questions in 15 minutes, one question at a time. Your answers are marked when you submit or when the time runs out.
Thema: Averages
1. Find the mean of 4, 7, 9 and 10.
Lösung
A. 7.5
- Add them: 4 + 7 + 9 + 10 = 30.
- Divide by how many there are: 30 ÷ 4 = 7.5.
Thema: Averages
2. Find the median of 3, 9, 4, 7, 1.
Lösung
D. 4
- Put them in order: 1, 3, 4, 7, 9.
- The middle value is 4.
Thema: Averages
3. Find the mode of 2, 5, 5, 6, 8, 5, 2.
Lösung
C. 5
- The mode is the value that appears most often.
- 5 appears three times.
Thema: Range
4. Find the range of 12, 18, 7, 21, 15.
Lösung
B. 14
- Range = largest − smallest.
- 21 − 7 = 14.
Thema: Pie charts
5. In a class of 30, 10 students chose football. What angle does football get in a pie chart?
Lösung
A. 120°
- Each student is 360° ÷ 30 = 12°.
- 10 × 12 = 120°.
Thema: Frequency tables
6. In a test, 4 students scored 1, 3 scored 2 and 3 scored 3. Find the mean score.
Lösung
D. 1.9
- Total of the scores: 1 × 4 + 2 × 3 + 3 × 3 = 4 + 6 + 9 = 19.
- Number of students: 4 + 3 + 3 = 10.
- Mean = 19 ÷ 10 = 1.9.
Thema: Scatter graphs
7. As hours of revision go up, test scores go up. What type of correlation is this?
Lösung
C. Positive
- When both variables increase together, the correlation is positive.
Thema: Averages
8. Which average is best for data with one very large value?
Lösung
B. The median
- One extreme value pulls the mean towards it.
- The median is the middle value, so it is not affected.
Thema: Stem and leaf
9. In a stem-and-leaf diagram the key is 3 | 4 = 34. What does 5 | 2 represent?
Lösung
A. 52
- The stem gives the tens and the leaf gives the units.
- 5 | 2 = 52.
Thema: Averages
10. The mean of five numbers is 8. Four of them are 6, 7, 9 and 10. Find the fifth.
Lösung
D. 8
- The total of the five numbers is 5 × 8 = 40.
- The four known numbers add up to 32.
- 40 − 32 = 8.
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