Bubble Charts

Graph > Chart > Scatter

 

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A bubble chart is actually a type of scatter chart. The x and y coordinates of the data marker (the bubble) are determined by two data values. The size of the data marker indicates the value of a third variable.

bubble2

 

 

Dialog box items

Axis X: Variable that determines the horizontal position of each point. This variable must be numeric.

Axis Y: Variable that determines the vertical position of each point. This variable must be numeric.

Bubble Size: Variable that holds the relative size of the bubble. This variable must be numeric.

 

 

Data

You need one pairs of columns of numeric data. If either the x- or y-value for an observation is missing, VisualStat does not plot the observation.

 

 

Options

Data Labels:
Use to label each data point. After creating a chart, you can change the data labels or their attributes, or add data labels (see Editing Labels). Select one of the alternatives:

oNone: Choose to suppress data labels

oY-value Labels: Choose to label each point with its y-axis value.

o(X,Y)-value Labels: Choose to label each point with its x and y-axis values.

oRow Index: Choose to label each point with its datasheet row index.

oRow Headers: Choose to label points with row headers.

Data Options:

oExclude missing values: Check to excludes rows that have missing values.

oShow ToolTip: Check to display messages in a ToolTip window.

 

 

Example

Using the Consumer Price Index dataset we can explore the relationship between the prices of various products and commodities. These data represent the average prices of the following items for the months of January between 1981 and 2006.

1.Open the DataBook reg.vstz

2.Select the sheet ConsumerPriceIndex

3.Choose the tab Graph, and then the group Chart, which displays a collection of gallery of items

4.Select Scatter and then use tool-tip to select Bubble Chart.
All available command is displayed in the gallery of graphics

5.Select group Data.

6.In Axis X, select Electricity.

7.In Axis Y, select Fuel_Oil

8.In Bubble Size, select Gasoline

9.Click Finish

 

 

Chart window output

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