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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for Statistician's calculation:

AVERAGE: Statistician's calculation
ERAS: Statistician's calculations
ERROR: Standard ___ (statistician's calculation)
MEAN: Statistician's calculation
NORM: Statistician's calculation
MODE: Statistician's calculation