How many letters does the top answer for “an economist who uses statistical and mathematical methods” have?

The most common answer is econometrician (14 letters).

Crossword clue: an economist who uses statistical and mathematical methods

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

econometrician 14 letters wn-def

an economist who uses statistical and mathematical methods

econometrist 12 letters wn-def

an economist who uses statistical and mathematical methods