RT Journal Article SR Electronic A1 KROTKÝ, Jan T1 EVALUATION OF ELECTRONIC AND CLASSIC TEXTBOOKS - VARIABILITY OF DATA SET JF Trends in education YR 2015 VO 8 IS 1 SP 245 OP 249 UL https://tvv-journal.upol.cz/en/artkey/tvv-201501-0041.php AB The author compares coefficients of variation data set between electronic and traditional textbooks. Electronic textbooks were evaluated by innovative J. Průcha (1998) methodology. Data of classic textbooks were obtained by meta-analysis of selected theses. Theses were created during the years 2009 - 2011 and the topic were didactic tools of textbook.While comparing the electronic and classic textbooks, the results show much higher variability of data when verbal components and apparatus of presenting subject matters are used. The level of data variability is influenced especially by two samples of electronic textbooks with a specific structure and character