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2.2 Data presentation and interpretation

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Question 27

The table shows grouped BMI values for the individuals in a supplied health data set whose BMI is available.

BMI b20≤b<2525≤b<3030≤b<40Frequency715549\begin{array}{c|ccc}\text{BMI }b&20\leq b<25&25\leq b<30&30\leq b<40\\\hline\text{Frequency}&71&55&49\end{array}BMI bFrequency​20≤b<2571​25≤b<3055​30≤b<4049​​

Calculate the frequency density for each class.

[3]
Markscheme

2.2 Data presentation and interpretation Questions

  1. A Level
  2. /Maths
  3. /2.2 Data presentation and interpretation

105 exam-style questions on WJEC A Level Maths 2.2 Data presentation and interpretation, covering 2.2.1 Data presentation and interpretation, 2.2.2 Data presentation and interpretation, 2.2.3 Data presentation and interpretation, 2.2.4 Data presentation and interpretation, 2.2.5 Data presentation and interpretation, 2.2.6 Data presentation and interpretation, 2.2.7 Data presentation and interpretation, 2.2.8 Data presentation and interpretation, and 2.2 Data presentation and interpretation. Each one has a worked solution and a mark scheme showing where the marks go.

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