1. A non-transitory computer-readable recording medium having stored therein an evaluation program, the evaluation program causing a computer to execute a process comprising: acquiring, from a plurality of captured images obtained by sequential image capturing, a motion of a person taking a beat in the plurality of captured images, or a timing at which the person takes the beat; and outputting an evaluation on a rhythm of the motion of the person based on a rhythm indicated by the acquired motion or the acquired timing.