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Given the scores of the ten students in their 30 items Examination in Mathematics, find the following using Sincich Method and Interpolation Method. Show Your Solution.
1st Quartile
5th Decile
86th Percentile

Students’ Score: 6, 8, 10, 15, 18, 20, 22, 24, 28, 30 (pasagot naman pls)​