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2007 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 744,398,384 1.0018 743,060,874 57 5,154 .001928911
A 744,480,000 1.0199 729,953,917 57 3,625 .002015255
A 744,327,801 1.0160 732,606,103 57 2,609 .002087253
A 744,247,712 1.0069 739,147,594 57 1,572 .002120381
F1 312,562,081 0.9106 343,248,497 7 370 .009656446
F1 314,128,602 0.8728 359,909,031 6 38 .005139457
F1 315,265,288 0.8946 352,409,220 5 19 .008568668
F1 292,453,072 1.0185 287,140,964 4 10 .031793261
G1 481,729,306 1.0013 481,103,871 7 658 .013563407
G1 480,865,629 0.9174 524,161,357 7 367 .005686334
G1 482,388,939 0.9741 495,215,008 7 242 .011252144
G1 478,447,830 1.0131 472,261,208 7 117 .003879041
L1 166,350,450 1.1225 148,196,392 7 230 .027851086
L1 182,528,904 1.3465 135,558,042 5 25 .227891233
L1 173,190,218 1.0614 163,171,489 3 5 .002546526
Random Totals: 6,657,364,216   6,707,143,567 293 15,041  
Catg D1 Exception Values: 11,875,433   9,955,683      
Catg L1 Exception Values: 128,875,593   123,384,336      
Total Test Values (4): 6,798,115,242   6,840,483,586      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 342,024,179

Confidence Interval Values (5)

State Lower Limit: 6,498,459,407 (State Test Value minus Margin of Error Percent)
Local Test Value: 6,798,115,242 (Within Confidence Interval)
State Upper Limit: 7,182,507,765 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 8,316,129,498 (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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