There may be two values which occur with the same maximum frequency. The distribution is then called bimodal. In a bimodal distribution, the value of mode cannot be determined with the help of the formula given above. In such instances where a distribution is bimodal and nothing can be done to change it, the mode should not be used as a measure of central tendency. If we have more points of maxima for the frequency distribution, the distribution is known as multimodal distribution.