“…In this step, we analysed the articles based on the quality of the dataset, in terms of the features used, the sample size, population, and collection methods. As can be seen in Figure 4, majority of researchers have used available data sources and records found in public dataset or through university/school repositories, precisely a total of seventy-three (73) studies indicate this ([10], [13], [56], [58]- [66], [20], [69], [71]- [78], [81], [27], [82], [83], [85], [87]- [93], [45], [94]- [97], [100]- [104], [106], [49], [107]- [110], [113]- [117], [119], [50], [121], [123]- [126], [128], [129], [131], [132], [134], [51], [135], [136], [138], [54], [55]). While these sources are easily accessible and provide expected accuracy of the prediction models, some researchers opted for a mixed-mode of data collection where both available sources and que...…”