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2011 Confidence Interval Detail
061/Denton
061-911/Northwest ISD

Category Summary

(1)
Category
(1)
Local
Value
(1)
Stratum
Ratio
(1)
State
Value
(2)
Sample
Size
(3)
Total
Parcels

Stratum
Variance
A 424,629,243 0.9968 425,992,419 48 3,258 .001934807
A 416,211,835 0.9999 416,253,460 46 2,225 .002335281
A 504,142,307 0.9817 513,540,091 48 1,904 .004417026
A 442,688,786 0.9868 448,610,444 50 926 .003651402
F1 141,729,138 0.9297 152,446,099 10 296 .062120410
F1 130,611,975 1.0260 127,302,120 9 33 .001885220
F1 153,121,872 0.9699 157,873,876 7 14 .002194283
F1 192,551,236 0.9596 200,657,812 6 10 .008093987
G1 233,442,381 0.9938 234,898,753 11 405 .015693811
G1 233,041,031 1.0043 232,043,245 10 166 .006772350
G1 232,170,620 1.0187 227,908,727 10 107 .011971936
G1 231,636,951 1.0454 221,577,340 10 65 .009757972
L1 37,666,253 1.0080 37,367,314 9 118 .009957069
L1 45,759,199 1.0457 43,759,395 7 20 .011079450
L1 76,962,834 1.0249 75,093,018 3 8 .010512024
Random Totals: 3,496,365,661   3,515,324,113 284 9,555  
Catg D1 Exception Values: 5,266,657   5,069,728      
Catg L1 Exception Values: 165,408,388   191,066,261      
Total Test Values (4): 3,667,040,706   3,711,460,102      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 185,573,005

Confidence Interval Values (5)

State Lower Limit: 3,525,887,097 (State Test Value minus Margin of Error Percent)
Local Test Value: 3,667,040,706 (Within Confidence Interval)
State Upper Limit: 3,897,033,107 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 4,593,698,246 (See ISD Summary Worksheet)

Sources:
(1) See Stratified Category Worksheet Reports PTS236, PTS430
(2) Number of parcels sampled by staff
(3) Total Category Parcels from Stratification Report, Appraisal Roll, or Self-report
(4) Includes any parcels in A, B, C, D3, F1, G1, G2, or L1 marked as exception properties
(5) Unstudied categories and sub-categories were not included in the Confidence Interval Values
(6) Includes local value of unstudied property categories and sub-categories

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