3 words in this vocabulary list
adjective relating to or involving exploration or investigation
noun a sample taken from a larger population in a way that each member of the population has an equal chance of being selected
noun a word that represents a person, place, thing, or idea
preposition a word that shows the relationship between a noun (or pronoun) and other words in a sentence
article a word that is used with a noun to indicate the type of reference being made by the noun