Related Clues:

• Cultural standard
• Accepted standard of behaviour
• Middle of a bell curve
• Extremes of north-eastern storm is to be expected?
• Nothing special, with 'the'
• Result that's expected
• Average; everyday
• Average result
• (The) accepted way
• It's what you would expect
• Societal expectation
• Standard behavior
• Standard or usual thing (with "the")
• Typical behavior
• Absence of marines is what one expects