Frequency (of a category for a categorial variable)
count of the # of data values falling into the category
each category for a catagroial variable has an associated frequency
Relative Frequency
proportion or percentage of the values falling in each category
each category for a categorial value has a relative frequency
relative frequency= frequency/sample size (n)
multiply by 100 to get a percentage
Frequency Table
table that has separate columbs for the possible values of the categorial variable and the relative frequency for each possible value
bar graph
possible values of the categorial variable on one axis (horizontal) and number line representing the frequency or relative frequency (vertical) bars extend to height with relative frequency or frequency and numbers on vertical are in regular intervals
Pie Chart
Circle cut into slices who's sizes correspond to the relative frequencies of the categories