This paper discusses an evaluation method of fuzzy numbers as mean values and measurement of fuzziness defined by fuzzy measures, and the method is applicable to fuzzy numbers and fuzzy stochastic process defined by fuzzy numbers/fuzzy random variables in decision making. Next we compare the measurement of fuzziness and the variance as a factor to measure uncertainty. Formulae are given to apply the results to triangle-type fuzzy numbers and trapezoidal-type fuzzy numbers