Descriptive Analysis. Tables 6-1 and 6-2 show the mean values of access charges in autumn 2003, separated between East- and West-Germany. Given the structural feature of consumption density we would expect increasing access charges if the cable rate increases. Regarding East-Germany and low voltage network the values in the feature “CR high” contradicts this expectation (table 6-1). Moving to West-Germany/low voltage network suppliers access charges will not increase with higher CR-feature if medium or high density is given. Keeping the structural feature “cable rate” in East Germany constant the mean access charge for high consumption/ medium cable rate only is contradictory to our hypothesis, the same contradictorily result is given for West-Germany/low cable rate/medium density (table 6-1). Table 6-1: Mean values of access charges – low voltage 09/2003 East West CR „cable rate“ High 6.23 6.09 5.89 5.53 5.25 5.15 medium 6.84 5.97 6.12 5.51 5.35 5.20 low n=1 n=1 5.71 5.53 5.68 5.21 Source: VDN 2003 Table 6-2 represents the mean values of medium voltage networks with population density as the first structural feature. Keeping constant D we have any expected sign in East Germany, and for West Germany unexpected values in high cable rate/low density and in medium cable density/medium density are calculated. Assuming a given cable rate we only get an “anomaly” in West-Germany/low CR and medium D. Table 6-2: Mean values of access charges – medium voltage 09/2003 East West Low medium high low medium high CR „cable rate“ High 3.13 3.21 3.08 2.81 2.71 2.58 medium 3.39 3.35 n=1 2.96 2.60 2.50 low 3.43 n=1 n=1 2.67 2.74 n=1 Source: VDN 2003 The descriptive values show that the variable cable rate can not be confirmed many times. But the density variables also have unexpected signs.
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