represents the indepen usually represents the dependent varia To show the general relationship between the two has a hor line that is drawn to "fit," or come close to, most of the data points. The graphs below show steps used to construct a scatter plot 6 Identify Which axis of a graph usually represents the independent variable? of the drink sales data at the left. Visualize It! Drink Sales 200 100 T 200 80 60 + 40 40 + 20 20 0 20 40 40 80 100 High temperature (*F) 0. 20 40 G0 80 100 20 40 60 80 100 High temperature (°F) High temperature (F) Step 1 Label the Axes Label each axis on a graph with the name of the variable that is Step 2 Plot the Data Points Plot the data from the table as Step 3 Draw a Line of Best Fit Draw a line that comes close data points on the graph. represented. Each axis can have its own range and scale so that the data can be seen easily. The range is the difference between the greatest value and the least value of a variable. The scale is the size that is used for each box or grid mark on the graph. 7 Analyze Do you see a trend in these data? Explain. to most of the data points. The line shows the pattern described by the data. It also shows how the data differ from the pattern. Moughton t Number of drinks sold Number of drinks sold Number of drinks sold