Here is the list of exercises on statistics. Each corrected exercise is accompanied by indications, reminders of the course, methodological advice which allows you to practice independently.

3 exercisesExercise example N°4401 :

In a library open from Tuesday to Saturday inclusive, we counted, day by day, the number of books lent during a week and we obtained the results in the following table:

Tuesday | 73 |
---|---|

Wednesday | 16 |

Thursday | 4 |

Friday | 73 |

Saturday | 79 |

2. Calculate the average number of books loaned, per day, during this five-day week.

statistics 9th Grade 10th Grade average

The purpose of this corrected statistics exercise is to practice calculating an arithmetic mean.

Exercise example N°4402 :

After a test, the marks of 26 students have been grouped in the table below :

grade n | `0<=n<4` | `4<=n<8` | `8<=n<12` | `12<=n<16` | `16<=n<=20` |
---|---|---|---|---|---|

Number of students | 4 | 5 | 7 | ? | 7 |

1. What is the number of students having obtained a mark between 12 and 16 (excluding 16).

2. How many students got less than 12?

statistics 9th Grade 10th Grade

The purpose of this corrected statistics exercise is to practice calculating the frequency of a series.

Exercise example N°4403 :

Here are the ages of the employees of a company, give the frequency of employees who are between 25 and 29 years old.

Age | 20-24 | 25-29 | 30-39 | 40-49 | 49-60 |
---|---|---|---|---|---|

Employees | 2 | 6 | 2 | 1 | 3 |

statistics 9th Grade 10th Grade

The purpose of this corrected statistics exercise is to determine from a table the frequency of a series.