Statistics - Interpreting and Evaluating Statistical Representations

Statistics - Interpreting and Evaluating Statistical Representations

IP 1
3 marks

The dot plot shows the number of plastic bottles collected at \(20\) collection points during a recycling campaign. Each dot represents one collection point.

  1. Find the number of collection points that collected:

    1. more than 300 bottles;

      [1]
    2. at least 300 bottles.

      [1]
  2. What percentage of collection points collected between \(200\) and \(500\) bottles, inclusive?

    [2]
  3. Explain what the two dots above \(0\) represent in this context.

    [1]

Solution:

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Answer:(a)(i) \(10\) (ii) \(14\) (b) \(75\%\) (c) Two collection points each collected no bottles.

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