import statistics

nilai = [68, 75, 75, 81, 84, 88, 90, 92, 97, 70]

q1, q2, q3 = statistics.quantiles(nilai, n=4, method="inclusive")
iqr = q3 - q1

print("=" * 38)
print("Laporan Statistik Nilai Matematika")
print("=" * 38)
print(f"Banyak siswa    : {len(nilai)}")
print(f"Nilai terendah  : {min(nilai)}")
print(f"Nilai tertinggi : {max(nilai)}")
print(f"Mean            : {statistics.mean(nilai):.2f}")
print(f"Median          : {statistics.median(nilai):.2f}")
print(f"Modus           : {statistics.multimode(nilai)}")
print(f"Stdev (sampel)  : {statistics.stdev(nilai):.2f}")
print(f"Q1              : {q1:.2f}")
print(f"Q2              : {q2:.2f}")
print(f"Q3              : {q3:.2f}")
print(f"IQR             : {iqr:.2f}")