tentukan nilai rata rata modus dan mediannya dari data 15, 17, 19, 18, 14, 15, 20, 10, 15.

10, 14, 15, 15, 15, 17, 18, 19, 20

1. Median ( nilai tengah) : 15
2. rata rata ( mean) : 10+14+15+15+15+17+18+19+20 /9
= 125, 22
3. modus ( data yg sering muncul ): 15