Biology · Paper 2 · Foundation + Higher · B7
The five quadrat counts are 2, 4, 4, 6 and 9. The mean is the total divided by the number of samples: 25 ÷ 5 = 5 plants per quadrat. The median is the middle value after sorting: 4. The mode is the most frequent value: 4. Include zero counts when they are valid samples.
No timer. Read the explanation after each answer.
Daily 5 · Exam practice · Revision sheet ↓
Foundation + Higher · B7. Fifteen lessons for Foundation and Higher, including required practical 7.
AQA Combined Science Trilogy 8464 · 4.7.2.1. Original notes, questions and diagrams. Models are simplified; teaching data are illustrative.