The formula 
is used to find the sample size needed to estimate a population proportion.In this formula, B represents the ____________________ on the error of estimation.
Definitions:
Canonical Babbling
A stage in child language acquisition where infants begin to produce repetitive syllables, such as "ba ba ba" or "da da da," which is a fundamental step in the development of speech and language.
Underextension
A linguistic phenomenon in child language acquisition where a word is used more narrowly than it is in adult language, applying it to fewer examples.
Canonical Babbling
A stage in infant language development characterized by repetitive syllables that resemble the rhythm and pitch of speech.
Telegraphic Speech
Two-word utterances produced by toddlers that communicate only the essential words.
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