Bar Graphs

In this post I will be talking about bar graphs.  I know we briefly covered this topic with the M&M activity, but we will revisit it in much more detail.  First there are many items that make bar graphs different then other statistic graphs.  The most picky of all is that the bars in a bar graph cannot touch each other.  This is because the data charted is categorical and cannot relate to the surrounding data.
Here are some examples of bar graphs to give a visual of what they can look like.
                             
Notice the bar graphs above show a title, labels, and a consistent way of measuring the data.  The main difference between bar graphs and histograms is that the bars do not touch because of the nature of the data collected.  In my opinion I think a bar graph is easier to read then a pictograph.
Bar graphs are best to use when the mean and median cannot be found due to the data collected.  Lastly, I wanted to point out that a bar graph can be transformed into a pie chart.  Just by cutting the bars out, taping them, and tracing the circle with values for each.
                              
                                
(Here is a fun activity for your students to play that goes off of what I have explained about statistics using bar graphs.)  Create a graph classic

Blogroll:
Bar Graphs
Pie Chart or Bar Graph
Creating Bar Graphs
Line or Bar Graph
Coolness Graphed

Tags:
Review of Bar graphs
Math goodies 
Create a graph
Bar Graph worksheets
Learn about bar graphs