Box charts, also known as box and whisker charts, are used to illustrate distribution of numeric data points in groups. These charts illustrate the total range of distribution, along with the range within which most points fall, in each group. They are normally used to display stock data.
•Groups by Category:
Choose when the category names are in one column and numerical data are in another column.
oMeasurement: Select a column of numeric data.
oCategorical Variable: Enter a column of grouping (categorical). VisualStat displays a separate box for each category, on the same graph.
•Groups by Columns:
Choose when each row in a column represents a single observation.
oVariables: Enter one or more columns of numerical data. VisualStat displays a separate box for each column.
Data may be arranged in one of two forms:
•Groups by Category
You need one column of categorical data and one column of corresponding numerical data. The resulting chart contains a box for each category.
•Groups by Columns
You need one or more columns of numeric values to be graphed. Each row of your data should represent a single observation.
Use to label whiskers, data points, medians, or means. After creating a chart, you can change the data labels or their attributes, or add data labels (see Editing Labels).
oWhiskers: Choose to label the upper and the lower whisker.
oQuantiles: Choose to label the first and the third quantile.
oMedian: Choose to label each median.
oMean: Choose to label each mean.
oExclude missing values: Check to excludes rows that have missing values.
oShow ToolTip: Check to display messages in a ToolTip window
oInverted Bar: Check to invert the axis.
The data represents cell phone towers' signal strength in various directions by more than one carrier. This data is hypothetical and is simply an example of how the Polar chart is used. The first column represents a cellular service provider company name, followed by angular orientation and signal strength.
The data is being grouped by the chart when plotted. AT&T entries are grouped together as are the Verizon entries.
1.Open the DataBook summary.vstz
2.Select the sheet CellPhone
3.Choose the tab Graph, and then the group Chart, which displays a collection of gallery of items
4.Select Stock and then use tool-tip to select Box-and-Whisker.
All available command is displayed in the gallery of graphics
5.Select group Data and subgroup Groups by Category
6.In Measurement, select Strength
7.In Categorical Variable, select Company.
Chart window output