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average

average(column_name, options = {})

Instance Public methods

Calculates the average value on a given column. Returns nil if there's no row. See calculate for examples with options.

Person.average(:age) # => 35.8

Links:

https://github.com/rails/rails/blob/0ef8a244231c355cab7f4d032efed51ef5ddfe99/activerecord/lib/active_record/relation/calculations.rb#L41

doc_ruby_on_rails

2015-06-20 00:00:00

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