Soal statiska minta tolong bantuin jawab dong kak +caranya

Jarak frek fk xi fi.xi ratarata |xi-ratarata| fi|xi-ratarata| 5-9. 6. 6. 7. 42. 13. 6 36 10-14. 8. 14. 12. 96. 13. 1. 8 15-19. 3. 17. 17. 51. 13. 4. 12 20-24. 2. 19. 22. 44. 13. 9. 18 25-29. 1. 20. 27. 27. 13. 14. 14 Jumlh. 20. 260. 88 Rata rata 260/20 = 13 1.modus Tb+(d1/d1+d2)×l 9,5+(8-6)/(8-6)+(8-3)×5 9,5+2/7×5 9,5+1,43 10,93 2.kuartil tengah Tb+(½n-fk/f)×l Tb+(½20-6/8)×5 9,5+(10-6/8)×5 9,5+4/8×5 9,5+20/8 9,5+2,5 12 3.simpangan rata rata sigma fi|xi-rata rata|/sigma fi 88/20 4,4