Rumus Statistik

Rumus Statistika :

Tepi Kelas :                                                     Ket :

Tepi Bawah Kelas (TB) = BB – 0,5                * BB=Batas Bawah Kelas

Tepi Atas Kelas (TA) = BA + 0,5                   * BA=Batas Atas Kelas

Titik Tengah (Xi) = BB+BA

                                      2

Panjang Interval (C) = TA-TB

Membuat Tabel Distribusi :

Jangkauan (R) = Nilai Tertinggi – Nilai Terendah

Aturan Sturgess >> K = 1 + 3,3 * Log n                    Ket :

Aturan Interval >> i =  R                                            * n = Jumlah Data

                                     K                                            * K = Kelas

                                                                                    * R = Jangkauan

Rata-rata :