Linda L. Cooper|Felice S. Shore
The Effects of Data and Graph Type on Concepts and Visualizations of Variability
Towson University|Towson University
recognizing interpreting variability data lies heart statistical reasoning since graphical displays facilitate communication data statistical literacy include understanding variability data gleaned graph paper identifies several types graphs students typically encounterhistograms distribution bar graphs value bar charts graphs share superficial similarity employing bars yet methods perceive variability data differ dramatically provide comparisons within graph type purpose developing insight variability means evident within datas associated graph introduce graphical aids visualize variability histograms value bar charts could easily tied numerical estimates variability