Figure 1. Distribution of the final exam marks of writers and the presenters in 2007-2013. Each bar represents a single mark. The marks from each year were grouped and separately sorted before plotting

From

More than Spelling and Grammar: Students Who Prefer to Write Outperform Students Who Prefer to Present

Krassimir Yankulov

American Journal of Educational Research. 2014, 2(11), 1029-1035 doi:10.12691/education-2-11-5