A mobile ratio of a customer is obtained to support a marketing strategy related to attracting customers. A population extraction unit extracts the number of persons, in which a game of one of the models of amusement machines installed in past times is recorded, as the number of persons of a population from pieces of information included in a biological information database. A mobile ratio calculation result output unit calculates a ratio of the number of persons, who use a model except the models of the amusement machines in which the population is obtained in the currently-installed amusement machines in the pieces of information included in the biological information database, to the population as the mobile ratio. The present invention can be applied to an apparatus that analyzes a trend of customers.