Patients who attended clinic in one week grouped by age as shown in the table below.

X Age (years) | No. of patients |

0 - 5 | 14 |

5 - 15 | 41 |

15 - 25 | 59 |

25 - 45 | 70 |

45 - 75 | 15 |

- Estimate the mean age.
- On the graph provided , draw a histogram to represent the distribution.