242 bar chart basics 1 a bar chart excels at showing precise values true false 2 a bar chart excels at showing relative values true false 3 the more gridlines drawn in a bar chart the better true false 4 a data label is a category name such as ibm in the above example true false 5 in the above bar chart on us employers the category axis is named employees true false 6 for the above us employers chart categories were ordered by value an alphabetical ordering would have been just as good