NOMOR 22-25 Semoga Bisa Paki Cara

22.
Mean :
[tex] mean = \frac{x1f1 + .... + xnfn}{n} \\ mean = \frac{4 \times 1 + 5 \times 2 + 6 \times 5 + 7 \times 12 + 8 \times 10 + 9 \times 6 + 10 \times 4}{1 + 2 + 5 + 12 + 10 + 6 + 4} \\ mean = \frac{4 + 10 + 30 + 84 + 80 + 54 + 40}{40} \\ mean = \frac{302}{40} \\ mean = 7.55[/tex]

Modus :
7, karena frekuensi yang terbanyak dibanding nilai yang lain.

Median :
[tex]me = \frac{x \frac{n}{2} + x \frac{n}{2} + 1 }{2} \\ me = \frac{x \frac{40}{2} + x \frac{40}{2} + 1}{2} \\ me = \frac{x20 + x21}{2} \\ me = \frac{7 + 8}{2} \\ me = \frac{15}{2} \\ me = 7.5[/tex]

22.
Nilai x :
[tex]mean = \frac{x1f1 + ... + xnfn}{n} \\ 37.84 = \frac{35 \times 1 + 36 \times 3 + 37 \times x + 38 \times 8 + 39 \times 6 + 40 \times 2}{1 + 3 + x + 8 + 6 + 2} \\ 37.84 = \frac{35 + 108 + 37x + 304 + 234 + 80}{20 + x} \\ 37.84(20 + x) = 761 + 37x \\ 756.8 + 37.84x = 761 + 37x \\ 37.84x - 37x = 761 - 756.8 \\ 0.84x = 4.2 \\ x = \frac{4.2}{0.84} \\ x = 5[/tex]
Jawaban : B. 5

23.
[tex]mean = \frac{x1f1 + ... + xnfn}{n} \\ mean = \frac{4 \times 1 + 5 \times 2 + 6 \times 6 + 7 \times 10 +8 \times 13 + 9 \times 5 + 10 \times 3 }{1 + 2 + 6 + 10 + 13 + 5 + 3} \\ mean = \frac{4 + 10 + 36 + 70 + 104 + 45 + 30}{40} \\ mean = \frac{299}{40} \\ mean = 7.475[/tex]

10 + 6 + 2 + 1 = 19

Jawaban : C. 19

24.
100.000 unit - 50.000 unit
= 50.000 unit

Jawaban : B. 50.000 unit

Sorry No. 25 Gak Tau