When should a line graph be used?
A. When there is no independent variable
B.when the independent variable is composed of categories and does not show a relationship.
C. When the independent variable is continuous and shows a casual link to the dependent variable.
D. When the independent variable is continuous and does not show a relationship to the dependent variable?

Answer: Line graphs are used to track changes over short and long periods of time. When smaller changes exist, line graphs are better to use than bar graphs. Line graphs can also be used to compare changes over the same period of time for more than one group.

Explanation:

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