The three pie charts illustrate the various kind of courses which wre followed by learners in three distinct years ( 1984, 1994, 2004).
From an overall perspective, it can be that the most popular types of studying was face-to-face courses, while online courses were the least common way to study. It is also noted that in 1984 online coursed were not mentioned.
To begin, the data in face- to -face courses was the highest in 1984 and hend to reduce dramatically, at about 13% in a decade.During a 10 – year period from 1994 , it continued to decrease signficantly, accounted for 40%.At the same time, the percentage of online courses almost remained the same ,about 10% and not mentioned in 1984.
Moving on, the proportion of mixed media tended to increase slightly from 1984 to 1994, at about 2%, however ,it shot up after 10 years at about 20 %.The figure for correspondence courses remained the same for 10 years, then it declined slowly in the next 10 years ,at about 5%.
