O-LevelMathematicsStatistics4024/11 · Oct/Nov 2013 · Q123 Marks

The lengths of the leaves of a plant were measured. The results are shown in the table. Length (x centimetres) 1 < x ≤ 3 3 < x ≤ 4 4 < x ≤ 5 5 < x ≤ 7 7 < x ≤ 10 Frequency 8 5 6 12 12 Frequency density

(a)Complete the table to show the frequency densities.[2]
(b)One leaf is chosen at random. Find an estimate of the probability that this leaf is more than 6 cm long.[1]

Write your answer and get it marked

On Oracle Prep you can write or photograph your own answer and have it marked by AI against this mark scheme, with feedback on what you missed.

Topic: Statistics, O-Level Mathematics (syllabus 4024). Structured question, 3 marks.
Source: O-Level Mathematics, Oct/Nov 2013 Paper 1 Variant 1, question 12.

Questions and mark schemes are from past examination papers and remain the copyright of the exam board. How Oracle Prep builds its content