As seen on the table, class area percentage values 
based on map are very close to those based on 
LANDSAT classification estimates. Differences 
between class values are changed from -1.42 4 to 
+2,17 % In fact, statistically F-Distribution 
test was applied to both group values in order to 
control the homogeneity of variances. By doing 
this, it was aimed to understand the significance 
level of difference between group values. For this 
purpose variances of groups were divided each 
other and resulting F. value was compared to the 
pre-determined ones tabulated for the levels 5% 
and 1 % (Düzgünes et al., 1983). Results indicated 
that no significant difference between group 
values exists. In other words, both groups 
represent the same population. According to this 
result it can be concluded that LANDSAT TM 
classification estimates based on max imum 
likelihood classifier may be used to determine the 
land-cover class areas for the study area of Bolu 
Province. 
It can also be deduced that the utility of TM data 
appears to be very high and successful for natural 
resources classification and should be more 
widely used in various applications. Furthermore, 
use of three band combination (4,3,2) yields 
information with an accuracy acceptable for 
agriculture and forestry purposes and at lower 
cost. 
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