GRADE 10 MATH LESSON Solving decile for group data | Teacher Mars

Deciles are the score- points that divide a distribution into ten equal parts. There are 9 deciles, which are denoted by 𝐷_1, 𝐷_2, 𝐷_3, …, 𝐷_9. In such organization of data, 10% falls below 𝐷_1, 20% falls below 𝐷_2, and so on, and 90% falls below 𝐷_9.