
Add scatter and bubble charts in Numbers on Mac
To create any type of chart, you can add a chart to a sheet first, then select the table cells with the data you want to use. Or you can select the data first, then create a chart that displays the data. Either way, when you change the data in the table, the chart updates automatically.
Tip: You can learn about different chart types in the Charting Basics template. To open it, choose File > New (from the File menu at the top of your screen), click Basic in the left sidebar, then double-click the Charting Basics template. In Charting Basics, click the tabs near the top of the template to view the different sheets; each one explains a different type of chart.
Intro to scatter charts and bubble charts
- Scatter charts show relationships between two or more sets of data. They display data as points and require at least two columns (or rows) of data to plot values for a single data series. By default, each data series in a scatter chart shares the x-axis value, and therefore, you need to add only one additional row or column to show another data series. - The scatter chart below shows the correlation between driving speed and fuel mileage (miles per gallon).  
- A bubble chart is a type of scatter chart in which the data is plotted as bubbles of varying sizes, rather than as points. Each data series in a bubble chart includes a third dimension that conveys the relationship between the compared values (x and y) and a size value (z). The size value determines the size of the bubble. - By default, each data series in a bubble chart shares the x-axis value, so you need to add only two additional rows or columns of data to show another data series. If you choose to use independent x-axis values, you need to add three additional rows or columns (x, y and z) to show another data series. - The bubble chart below shows how the number of units sold (y) varies with the number of salespeople (x). The data is plotted as bubbles of varying sizes — the larger the bubble, the higher the total sales amount (z).  - To create these charts, you can add a chart to a sheet first, then select the table cells with the data you want to use. Or you can select the cells first, then create a chart that displays the data. Either way, when you change the data in the table, the chart updates automatically. - If the data in your table is categorised, you can select a column to plot the results of a summary row calculation. - The topics below describe how to add a chart first, then select the data. 
Create a scatter chart
- Go to the Numbers app  on your Mac. on your Mac.
- Open a spreadsheet, click  in the toolbar, then click 2D or Interactive (there are no 3D scatter charts). in the toolbar, then click 2D or Interactive (there are no 3D scatter charts).- Click the left and right arrows to see more styles. 
- Click a scatter chart or drag one to the sheet.  
- Click the Add Chart Data button near the chart. - If you can’t see the Add Chart Data button, make sure the chart is selected. 
- Select the table rows or columns that have the data you want to use by clicking the numbers or letters for those rows or columns. - You can select rows or columns from one or more tables, including tables on different sheets. - If you select more than two columns: The first column selected determines the x-axis values, and each additional column selected creates a new series (and determines the y-axis values for that series). 
- If you select two columns: The scatter chart plots one data series. The first column selected determines the x-axis values, and the second column determines the y-axis values. - To have each series use a different column for the x-axis values, click the pop-up menu in the bar at the bottom of the window and choose Share X Values to remove the tick. 
- If you select only a single column: The scatter chart plots the data similar to a line chart, with the values from the selected column along the y-axis. 
 
- To change whether rows or columns are plotted as a series, choose an option from the pop-up menu in the bar at the bottom of the window.  
- Click Done in the bar at the bottom of the window. 
Create a bubble chart
- Go to the Numbers app  on your Mac. on your Mac.
- Open a spreadsheet, click  in the toolbar, then click 2D or Interactive (there are no 3D bubble charts). in the toolbar, then click 2D or Interactive (there are no 3D bubble charts).- Click the right and left arrows to see more styles.  
- Click a bubble chart or drag one to the sheet. 
- Click Add Chart Data below the chart. - If you can’t see Add Chart Data, make sure the chart is selected. 
- Select the table rows or columns with the data you want to use by clicking the numbered or lettered bar for those rows or columns. - You can select rows or columns from one or more tables, including tables on different sheets. - Plot one data series: Select three columns. The first column selected determines the x-axis values, the second column determines the y-axis values, and the third column determines the size of the bubble. 
- Plot more than one data series: Select sets of three columns. The bubble chart plots each group of three columns as one data series. The first column selected determines the x-axis values, the second column determines the y-axis values and the third column determines the sizes of the bubbles. - To have each bubble series share one column for the x-axis values, choose Share X Values from the pop-up menu in the bar at the bottom of the window. In this case, select sets of two columns for each additional data series. 
- Use data from a single column: Select the column. The bubble chart plots the data similar to a line chart, with the values from the selected column along the y-axis. 
 
- To change whether rows or columns are plotted as a series, choose an option from the pop-up menu in the bar at the bottom of the window.  
- Click Done in the bar at the bottom of the window. 
Share the x-axis for multiple values along the y-axis
Sharing the x-axis means plotting a single kind of value along the x-axis, while allowing for multiple kinds of values to be plotted along the y-axis. \By default, the x-axis values are shared between multiple sets of y-axis values in some types of chart.
- Go to the Numbers app  on your Mac. on your Mac.
- Open a spreadsheet, click the chart, then click the Edit Data References button. 
- Click the pop-up menu in the bar at the bottom of the window and choose Share X Values to add or remove the tick. - You see a tick when x-axis values are shared.  
- Click Done in the bar at the bottom of the window. 
You can change the data reflected in the chart at any time. To learn how, see Modify chart data.