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12 cards from this deck
A graph that displays frequency data using connected straight lines
Connected straight lines
Can compare multiple datasets without overlapping
Add lower & upper bounds, divide by 2
lower bound+upper bound2\frac{\text{lower bound} + \text{upper bound}}{2}2lower bound+upper bound
Mid-interval values
Frequencies
Use straight lines only, never curves
Contingency tables
Relationships between two categorical variables
Use addition & subtraction with row/column totals
Find rows/columns with only one missing value
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