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circle graph
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bar graph
"Bar graph" is the word for the relative frequencies shown by heights.
Line Plot
You can use graph paper
circle graph
lololololololololol
This would use a bar graph.
Pie Chart
Yes. A bar graph of frequencies for classes of heights seems a perfectly sensible way to present the information.
Bar graph
bar graph
"Bar graph" is the word for the relative frequencies shown by heights.
Line Plot
Bar Graph
It can be, but not necessarily. If I had the heights (continuous variable) of a class of students I might use a histogram. Conversely, if I had the number of cars (discrete variable) driving by every minute, I would use a line graph. It all depends on which kind of graph conveys the information to your audience in the best way.