NotesLine Graph
-Line graphs are used when one variable (independent) What is a Variable? -Independent Variable: The variable that is controlled by the experimenter, such as, time, dates, depth, and temperature. This is placed on the X axis. Bar Graph -The data for this graph are non-numerical and discrete for at least one variable. There are no dependent and independent variables. Axes may be reversed to give a graph with the categories on the x axis. -Bar graphs can therefore be drawn horizontally or vertically. This type of graph is very useful for comparing two or more similar items. Pie Graph -As with bar graphs, pie graphs are used when the data for one variable are discrete(categories)and the data for the other variable are in the form of counts(percentages or proportions) -A circle is divided according to the proportion of counts in each category - |
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