Corrected online exercises on statistics

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 exercises
  • N°4401 (statistics) : The purpose of this corrected statistics exercise is to practice calculating an arithmetic mean.

    Exercise example :

    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:

    Tuesday73
    Wednesday16
    Thursday4
    Friday73
    Saturday79
    1. Calculate the total number of books loaned during the entire week.
    2. Calculate the average number of books loaned, per day, during this five-day week.

    4401 statistics 9th Grade | 10th Grade average
  • N°4402 (statistics) : The purpose of this corrected statistics exercise is to practice calculating the frequency of a series.

    Exercise example :

    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 students457?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?

    4402 statistics 9th Grade | 10th Grade
  • N°4403 (statistics) : The purpose of this corrected statistics exercise is to determine from a table the frequency of a series.

    Exercise example :

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

    Age20-2425-2930-3940-4949-60
    Employees26213

    4403 statistics 9th Grade | 10th Grade

The statistics topic is available for : 9th Grade, 10th Grade

List of exercises by class : middle and high schools, 6th Grade, 7th Grade, 8th Grade, 9th Grade, 10th Grade, 11th Grade, 12th Grade.

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