# Lesson Worksheet: Mean Mathematics

In this worksheet, we will practice calculating the mean of a set of whole numbers.

**Q1: **

Find the mean of the values 15, 20, 37, 43, 13, 34, 41, and 39.

**Q2: **

The table shows the number of hours that two students spent studying on each day of a week. Calculate the mean number of hours spent studying by student (B).

Student (A) | 5 | 7 | 7 | 7 | 6 | 7 | 3 |
---|---|---|---|---|---|---|---|

Student (B) | 7 | 6 | 4 | 8 | 3 | 4 | 3 |

**Q3: **

The table shows the marks that four students received in their end of year exams. Calculate the mean mark of student (C).

Students | Mathematics | Chemistry | Physics | Biology | History |
---|---|---|---|---|---|

(A) | 10 | 11 | 12 | 13 | 14 |

(B) | 9 | 10 | 8 | 7 | 6 |

(C) | 8 | 13 | 7 | 5 | 12 |

(D) | 14 | 13 | 9 | 11 | 8 |

**Q4: **

The mean of the given data set is 7. Find the missing value .

9 | 6 | 3 | 8 | 5 |

**Q5: **

Which of the following data sets has a mean of 59?

- A52, 76, 23, 50, 15
- B81, 34, 85, 21, 76
- C74, 79, 27, 59, 56
- D90, 64, 49, 13, 50
- E11, 50, 21, 72, 48

**Q6: **

The table shows the total number of votes that each act received in a local talent show.

Singer | Dancer | Comedian | Acrobat | Magician | Musician |
---|---|---|---|---|---|

14 | 29 | 36 | 7 | 23 | 11 |

Find the mean number of votes.

Describe what the mean represents.

- AThe difference between the largest value and the smallest value in the list
- BThe average between the third and fourth terms
- CThe number of votes that each act would have received if all the votes had been shared fairly among the acts

**Q7: **

Calculate the mean of the values .

**Q8: **

The 6 most recent customers at a bookstore bought the following numbers of books: 3 books, 2 books, 2 books, 2 books, 4 books, and 5 books. What is the mean number of books bought?

**Q9: **

Naser has the following data: 18, , 11, 15.

If the mean is 13, find the value of .

**Q10: **

Given that the mean of the values and 18 is 10, find the value of .