การวิเคราะห์การแจกแจงความล่าช้าของเที่ยวบินขาออก

Abstract

This research aims to study the overall outbound flight delays and find out the appropriate departure delay distribution. EasyFit program (version 5.6) is used to fit flight delay distributions. Anderson-Darling test statistic is used for goodness-of-fit test. Secondary data in this research are the delayed departure time of one domestic airline's departure from 24 provinces between March 23, 2017 and March 22, 2018. Bangkok data are grouped according to the region of destination and season. The research results show that the percentages of delays which greater than or equal to 6 hours of were airline's departure from Phitsanulok (0.16 percent) and airline’s departure from Bangkok to the north east during the rainy season (0.04 percent). Descriptive statistics indicate that 2 routes had the highest median. First, the route from Bangkok to the north during the summer, which the median, the average delay and the IQR were 22, 34.241 and 29 minutes, respectively. Second, the route from Bangkok to the North during the winter, which those were 22, 31.617 and 27 minutes, respectively. The analysis of the domestic departures flight delay distributions have a total of 12 distribution patterns. Most of the flight delay distributions are Log-Pearson 3 and Burr, representing 25.71 percent from the total.