PERAMALAN JUMLAH PENDONOR DARAH SUKARELA GOLONGAN DARAH AB DI KOTA PALU MENGGUNAKAN METODE DEKOMPOSISI SENSUS II

Blood is a liquid found in living things. There are four types of blood, namely A, B, AB, and O. AB blood type is the least population in the world, which is only about 4%. The increasing need for blood is not accompanied by an increase of the donors. Therefore, it is necessary to forecast the number of blood donors, especially AB blood type in Palu using the Decomposition Census II method by decomposing the data into seasonal, trend-cyclic, and random to find out the forecast in the coming period. The forecast results for the period January to December 2022 obtained blood donors with 106, 36, 63, 95, 67, 111, 65, 67, 112, 102, 78, and 55 from volunteers, which the highest number of blood donors was in September with 112 volunteers, while the lowest was in February with 36 volunteers, which shows that tends to increase drastically when compared to 2014 to 2021.

Keywords: Decomposition Census II, Blood Donor, Forecasting.