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Ch.11 Summarization (Summarize (typical functions (count, sum, min, max,…
Ch.11 Summarization
Summarize
under group or group by
one or more columns to group data selected
creates bucket for each unique group
typical functions
count
sum
min
max
last
first
average
median
mode
standard deviation
crosstab
uses content inside column to produce new columns
turns rows into columns
Used to aggregate or summarize data that is not focused on the right unit
James Frainey
Jafr4672@colorado.edu