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Effective graphs are the principal means of
communicating results to a wider audience
Characteristics of a good graph
Show the Data
Make patterns in the data easy to see
Represent magnitudes honestly
Draw graphical elements clearly
Frequency table
It is used to display a frequency distribution for categorical or numerical data
One Variable Categorical Graph
Bar Graph
One Variable Numerical Graph
Histogram
Contingency Tables
describe the association between two (or more) categorical variables by displaying frequencies of all combinations of categories
Two Numerical Variable Graph
Scatter Plot
Two Categorical Variables
Grouped bar graph
Mosaic plot
One numerical variable and one categorical variable graph
Strip Chart
Violin Plot
Multiple Histograms
Cumulative frequency distribution
Outliers
Extreme data points lying well away from the rest of the data