The type of graph you use to represent your data depends on what
you want to show. The following are examples of when you would use a bar and/or
a line graph.
You would use a BAR
You want to show the final comparison between two or more sets of
You want to show the final growth of plants.
You want to show the average value of two or more sets of data.
For example, if you conducted an experiment using three plants (A, B, and C) and
repeated the experiment 5 times. You could get the average height of
plants A1, A2, A3, A4, and A5. You could do the same with all the B's and
all the C's.
Most of the time, the values on the X-axis of bar
graphs represent the subjects used during the
You would use a LINE
You want to show daily and progressive growth of plants.
You want to show distance over time.
Both y- and x-axis have numerical values (or have been measured
using an instrument).
FOR BOTH BAR AND LINE GRAPHS