They give a visual representation of the data, so they can be useful as a way of interpreting the data.
Graph
Yes - you can create graphs from the data in a spreadsheet.
Yes, highlight the information on the spreadsheet. Go to insert...create....click on Next, then choose a style of graph, and click done.
spreadsheet system
Pie chart and line graph
You can use MS Excel to create a graph from data in the spreadsheet or from an external source. You also can display a graph with MS Powerpoint. MS Word can display a graph, but usually does not create it.
spreadsheet
The scales and title applied to the graph's axes.
no
You plot your data as points on a Cartesian coordinate system (X/Y graph). You chose "Scatter" from the chart type in your spreadsheet program.
becauseit is important
The major importance of a line graph is that it allows a person to visually see the relationship between two major variables. A line graph contains a vertical axis and a horizontal axis.