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

Question id: 530. This question is similar to one that appeared on a GCSE Higher paper in 2019. The use of a calculator is allowed.

The table shows information about the heights of 85 stalagmites.

Height (\(h\) cm) | Frequency |
---|---|

\(10\lt h \le 15\) | 9 |

\(15\lt h \le 20\) | 13 |

\(20\lt h \le 25\) | 18 |

\(25\lt h \le 30\) | 22 |

\(30\lt h \le 35\) | 15 |

\(35\lt h \le 40\) | 8 |

(a) Find the class interval that contains the median.

(b) On the grid below, draw a frequency polygon for the information in the table.

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