Amafomula
Isibonelo 29: amafomula. Isilinganiso siyisamba esihlukaniswa ngo-. Ukuchezuka okujwayelekile kwesampuli kuhlukanisa ngo-. Futhi Ukuchezuka okujwayelekile kwe-population kuhlukanisa ngo-. Amanani ka- asebenzisa amafomula afanayo.
Isibonelo 29: amafomula. Isilinganiso siyisamba esihlukaniswa ngo-n. Ukuchezuka okujwayelekile kwesampuli kuhlukanisa ngo-n−1. Futhi Ukuchezuka okujwayelekile kwe-population kuhlukanisa ngo-n. Amanani ka-y asebenzisa amafomula afanayo.