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a bar graph
Anytime.
data are not alway numbers sometimes it have letters in it.
BAR ;)
in a chart or graph
A+ statistical comparison
a bar graph
A point can represent a piece of data or an (x,y) value.
The answer depends very much on the sort of data and on what information the graph is meant to convey.
Anytime.
A pie graph represent data as a part of a whole, showing the separate portions of the data in accordance to the whole.
It all depends on what kind of bar graph your're making, and also for what data your putting on it !
data are not alway numbers sometimes it have letters in it.
to represent and compare datas to it.
BAR ;)
A concrete graph uses physical objects to represent data, such as bar graphs made with blocks. A pictorial graph uses pictures or symbols to represent data, like a graph showing ice cream sales using ice cream cones.
in a chart or graph