There are two ways to make a bar chart in GeoGebra. The first way is to use a list of observations, which is the easir of the two. The second way is to use a frequency table. 
     GeoGebra Instruction 1
Algebra     View,         Graphics     View     and         Spreadsheet     mode         under         View     in         Menu.         A.         One     Variable     Analysis GeoGebra     displays         a         histogram         by         default,         so         you         need         to         select         Bar     Chart     from         the         drop-down         list         at         top         of         the         window.         Copy     to     Graphics     View Graphics     View.         You         can         also         change         its         properties         by         right-clicking         and         choosing         Settings.         
      
     GeoGebra Instruction 2
Algebra     View,         Graphics     View     and         Spreadsheet     under         View     in         Menu.         A.         List Name     to         Data     and         click         OK.         B.         List Name     to         Frequencies     and         click         OK.         Algebra View, type         BarChart(<List of Data>, <List of Frequencies>)
and replace <List of Data> with Data, and <List of Frequencies> with         Frequencies.         
The bar chart will now be displayed in Algebra View.