Assessing the Distribution of Counts
overview 

 Use these graphs to plot counts of unique values. For example you can plot:

·    Number of each type of flaw that caused manufactured parts to be rejected   

·    Number of votes received for each candidate in an election

Graph

Description/Uses

Bar Chart

 

Use a bar chart to compare the distribution of counts across up to four categorical variables. Data can be raw (each row in a column represents one observation) or in a frequency table (category names are in one column and summary data are in another column).  

To compare statistics other than counts, see Comparing Summaries of a Variable.

Pie Chart

 

Use a pie chart to compare the proportion of each data value relative to the whole.  Data can be raw (each row in a column represents one observation) or in a frequency table (category names are in one column and summary data are in another column).  

To compare statistics other than counts, see Comparing Summaries of a Variable.