Derived from: https://nces.ed.gov/.  Line graphs are used to track changes over short and long periods of time.  Line graphs can also be used to compare.

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Presentation transcript:

Derived from:

 Line graphs are used to track changes over short and long periods of time.  Line graphs can also be used to compare changes over the same period of time for more than one group.

 Bar graphs are used to compare things between different groups or to track changes over time.  However, when trying to measure change over time, bar graphs are best when the changes are larger.

 Pie charts are best to use when you are trying to compare parts of a whole.  Pie charts do not show changes over time.

Proportions of two years with multiple donuts

 Area graphs are very similar to line graphs. They can be used to track changes over time for one or more groups.  Area graphs are good to use when we are tracking the changes in two or more related.

 X-Y plots are used to determine relationships between the two different things.  The x-axis is used to measure one event (or variable) and the y-axis is used to measure the other. › If both variables increase at the same time, they have a positive relationship. › If one variable decreases while the other increases, they have a negative relationship. › Sometimes the variables don’t follow any pattern and have no relationship.