The three given pie charts compare the proportions or students who chose various course types over 3 periods 1984, 1994, and 2004.
Overall, the most popular type of courses was face-to-face courses, accounting for the largest share in, while online courses were the smallest category throughout out the period.
According to the charts, we clearly see that the most popular type of courses was face-to-face course between1984 and 2004, even in 2004 percentage was more than mixed-made courses for a 5 percentage points higher than. In contrast online type courses were least popular in compare with others, it appeared in 1994, and accounted for 11%, 10 years later courses decrease minimally to just 1%.
It is explicitly observed that the rest of the courses such as
correspondence courses and mixed-made courses made up one third in 1984, remain stable in 1994 and almost a half if include online courses, and over than half, just over 65% in 2004.
