Texas Instruments TINSPIRE Teacher Software Guidebook - Page 617

For example, you can use multiple boxplots to compare the distributions of sample proportions. In the example, true proportion is .5 and sample size varies from n=20 to n=40 to n=90. Notes: - You can create a box plot with frequency by choosing Add X Variable or Add Y Variable on the Plot Properties menu. - You can specify a variable multiple times as you choose variables to plot as box plots. - The variable used to provide frequency information is added to the label on the horizontal axis in the format: x_variablename{frequencylist_name}. 4. Point and click the regions of the box plot to explore and analyze the data it represents. - Hover over a region or over a whisker to display the details for the portion of the plot that interests you. The label for the quartile that corresponds to your selection displays. - Click a region of the box plot to select the data points or whiskers. Click again to remove the selection. - You can select any box plot that does not include frequency data and choose Dot Plot on the context menu to change the plot type. - Drag a selection to move it and explore other possibilities for the data. - Use the arrow keys to move a data point one pixel at a time. - Activate the Graph Trace tool and press 7 or 8 to move across dots and regions of the plot. As the trace cursor moves, the values for Q1, the median, Q3, and whisker ends/outliers display. 5. Change the plot from a modified box plot to a standard box plot by choosing Extend Box Plot Whiskers on the Plot Properties menu. Using Data & Statistics 605