## Exam-Style Question on Statistics## A mathematics exam-style question with a worked solution that can be revealed gradually |

Question id: 258. This question is similar to one that appeared on a GCSE Higher paper (specimen) for 2017. The use of a calculator is allowed.

Ben measured the length and the width of each of 10 sea shells of the same type. The results are shown below.

(a) Construct a scatter graph with this data.

Sea Shell Dimensions | |

Length(cm) | Width(cm) |

7.3 | 2.7 |

9.7 | 3.2 |

7.5 | 2.6 |

6.1 | 2.9 |

9.0 | 2.9 |

8.7 | 3.0 |

7.5 | 2.5 |

10.3 | 3.5 |

9.5 | 3.3 |

The point representing the results for one of the shells is an outlier.

(b) Explain how the results for this shell differ from the results for the other shells.

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