Opinions on co-education people were asked whether they, Ask an Expert

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Opinions on Co-education People were asked whether they thought co-education is good or not. The graph shows results of two surveys, one done in 2012 and the other done in 2015.

Yes means they believe co-education is good and No means they do not believe that.

What does the graph tell us about changes in opinions about co-education? Explain.

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