Table 27 Direct Market Data Method Value Calculations The eight estimates of value shown in the above table were based on statistically valid data sample sizes. In addition, the observed values were relatively close providing the appraiser with a level of confidence that would include all of the above results in the reconciliation of value estimates. As indicated above, the average of the eight observed control, nonāmarketable values is $3,700,000 and the median is $3,000,000. There is approximately a 22% difference between the mean and median values, and the low coefficient of variation (a measure of how dispersed the data is) indicates that the calculated estimates of value form a reasonable normal distribution.