what is the symbol for _ what is the symbol for _i' what is the symbol for i in a problem what does the symbol i represent what symbol represents the ''i'' symbol? what does symbol in the context represents which symbol represents i in context? what does the symbol in i mean context meaning of _ which symbol is used by a problem to represent point estimation? context of problem what is the meaning of i mean in a symbol what does symbol i represent what is the symbol for i what does it symbol mean what is context of a problem what does 'i' represent in the context of the problem what does the symbol i mean? what does it represent in a context what is _i'