1. An information processing apparatus for inputting a pronunciation symbol corresponding to an English notation, comprising: pronunciation symbol information holding means for holding pronunciation symbol information indicating a relationship between a predetermined alphabet and a pronunciation symbol that starts from the predetermined alphabet; pronunciation symbol statistical information holding means for holding statistical information associated with a probability of occurrence of each pronunciation symbol immediately after a predetermined pronunciation symbol; display means for extracting pronunciation symbols corresponding to an input alphabet from the pronunciation symbol information, and displaying the extracted pronunciation symbols while sorting them on the basis of the statistical information; and determination means for determining a pronunciation symbol corresponding to the English notation from the displayed pronunciation symbols.