tentukan mean, median, dan modus pada gambar

Mean :
[tex]mean = \frac{x1f1 + ... + xnfn}{f1 + ... + fn} \\ mean = \frac{70(9) + 75(9) + 80(12) + 85(7) + 90(7) + 95(6)}{9 + 9 + 12 + 7 + 7 + 6} \\ mean = \frac{630 + 675 + 9 60 + 595 + 630 + 570}{50} \\ mean = \frac{4.060}{50} \\ mean = 81.2[/tex]

Median :
[tex]median = \frac{x \frac{n}{2} + x \frac{n}{2} + 1 }{2} \\ median = \frac{x \frac{50}{2} + x \frac{50}{2} + 1 }{2} \\ median = \frac{x25 + x26}{2} \\ median = \frac{80 + 80}{2} \\ median = 80[/tex]

Modus :
80

Maaf Kalau Salah

cara cepat untuk mediannya

[tex]\frac{n}{2} = \frac{50}{2} = 25 \\ x25 = 80[/tex]