Tim Gan Math
Sign up free

Tree heights and a suitable diagram

Tree heights and a suitable diagram

Secondary 2
6 marks
TGM Original Questions

Core stretch

Tree heights are shown.

StemLeaf
\(12\)\(2\) \(5\) \(8\)
\(13\)\(1\) \(4\) \(4\) \(7\) \(9\)
\(14\)\(0\) \(2\) \(5\) \(5\) \(5\)
\(15\)\(1\) \(3\) \(6\) \(8\) \(9\)
\(16\)\(2\) \(4\)

Key: \(12|2=122\) cm.

    1. Find the mode.[1]
    2. Find the fraction above 150 cm.[1]
    3. Among the bottom 20% when ordered, find the tallest height.[1]
  2. Choose a dot plot or histogram, justify, and draw it.[3]

Solution:

Solution locked

680+ questions here come with free worked solutions. A free account saves your questions and progress; this one needs a course plan.

Create free accountSign inGet the E Math course · from S$29.98/moE Math tuition

Create a free account to practise similar questions.

Create free accountSign inGet the E Math course · from S$29.98/moE Math tuition
Answer:(a)(i) \(145\) cm (ii) \(\frac{7}{20}\) (iii) \(131\) cm (b) dot plot, with one dot per listed height.

Need help? Join our E-Maths tuition for O-Level success.

Learn more