Stats 215 Ch 1
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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

if have a %
multiply the value by the total to get the #