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variation
mastery UK /ˌvɛəɹɪˈeɪʃn̩/ US /ˌvɛəɹiˈeɪʃn̩/noun
card 1 of 10 · fill in the blank
The report showed _____ variation in test scores across different schools.
card 1 of 10 · fill in the blank
The report showed _____ variation in test scores across different schools.