Bar Charts

Given a frequency table, you can make a bar chart. Start by entering following data into the spreadsheet.

 

The mid value of the first interval is 145. Enter 145 into A1. Enter =A1+10 into A2 and press enter. Make relative copies by dragging the blue square at the bottom right corner of A2.

You need two lists, one of the data and one of the frequencies. Create one list from each column.

In order to make a bar chart you use the command:

BarChart[name of the List of data, name of the List of frequencies]

The numbers in the list of data must go up by a constant amount.

Note that if you enter a command in the input bar and press F1 you get help.

The bar chart in the picture above is called a, the value of a is the area of the bar chart.

Save your working (the GeoGebra-file)