1er QUARTILE, 3ème QUARTILE et Écart INTERQUARTILE - Exercice Corrigé - Seconde

Exercises🖊️here ➡️ https://bit.ly/3eAIum9 📖 Summary sheet here ➡️ https://bit.ly/3GVAQxv #maths #secondyear #exercisewithsolutions How do you calculate the measures of dispersion, which are: Q1, Q3, and the interquartile range? The median is a value that divides the data set in half. At least 50% of the data set is less than the median. It is a measure that defines the middle of the data set. The first quartile corresponds to the value where at least 25% of the data points are less than or equal to this value. The third quartile corresponds to the value where at least 75% of the data points are less than or equal to this value. As with the median, to find the first and third quartiles in a table, you need to: 1) Add a row for the cumulative frequencies. 2) The total number of values, N, is found in the last cell. 3) Q1 is the value associated with N/4 or N × 0.25. Q3 is the value associated with 3N/4 or N × 0.75. We take the larger value if we are between two columns. The interquartile range is: Q3 - Q1 This means that at least 50% of the values ​​are within the interquartile range. You can also find dozens of tests given by teachers and corrected by us: https://cours-galilee.com/ressources-... Music credit: Title: Lovely Swindler Author: Amarià