On average

prep_phrase

Definitions

Adverb
  1. 1
    typically wordnet
Prep_phrase
  1. 1
    Expressed as a measure of central tendency (usually the arithmetic mean).

    "On average, students spend about 20 hours a week studying."

  2. 2
    Usually, typically; as a rule; as often as not. idiomatic

    "People these days live longer on average"

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