is cheaper by the dozen a true story
Cheaper by the Dozen Cheaper by the Dozen is a semi-autobiographical novel written by Frank Bunker Gilbreth, Jr. and Ernestine Gilbreth Carey, published in 1948. The novel recounts the authors' childhood lives growing up in a household of 12 kids. The bestselling book was later adapted into a feature film by Twentieth Century Fox in 1950 and followed up by the sequel, Belles on Their Toes (1950), which was adapted as a 1952 film.
Dozen A baker's dozen, also known as a big or long dozen, is 13. Varying by country, some products are packaged or sold by the dozen, often foodstuff (a dozen eggs). Dozen may also be used to express a large number of items as in "several dozen" (ex. dozens of people came to the party).[1]