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2011 Confidence Interval Detail
061/Denton
061-902/Lewisville ISD

Category Summary

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

Stratum
Variance
A 3,956,195,724 1.0017 3,949,481,605 99 26,099 .003642100
A 3,809,416,120 1.0115 3,766,105,902 100 17,303 .003177949
A 4,015,489,670 0.9957 4,032,830,843 99 12,782 .003901188
A 3,777,418,574 0.9897 3,816,730,902 100 6,805 .005240951
B 307,698,615 0.9678 317,936,159 11 179 .019082522
B 360,074,494 0.8354 431,020,462 7 30 .019448957
B 360,228,371 0.7320 492,115,261 6 20 .042899300
B 354,741,701 0.8315 426,628,624 7 14 .005988885
C 105,376,836 1.0391 101,411,641 11 907 .020785844
C 104,931,822 1.0712 97,957,265 7 227 .006640348
C 100,461,906 1.0219 98,308,940 7 95 .041658511
C 107,244,399 0.9697 110,595,441 7 41 .010611186
F1 910,206,355 0.9559 952,198,300 13 908 .051355981
F1 946,373,252 1.0104 936,632,276 13 343 .006429602
F1 915,299,333 0.9207 994,134,173 10 122 .007730455
F1 1,033,867,949 1.0174 1,016,186,307 9 47 .009719457
L1 292,488,257 1.0839 269,848,009 10 1,603 .021280424
L1 308,074,293 0.9963 309,218,401 13 219 .011309261
L1 331,719,936 1.0648 311,532,622 11 60 .008023348
L1 512,388,571 0.9912 516,937,622 6 16 .001324957
Random Totals: 22,609,696,178   22,947,810,755 546 67,820  
Catg D1 Exception Values: 1,360,536   1,099,440      
Total Test Values (4): 22,611,056,714   22,948,910,195      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 1,147,445,510

Confidence Interval Values (5)

State Lower Limit: 21,801,464,685 (State Test Value minus Margin of Error Percent)
Local Test Value: 22,611,056,714 (Within Confidence Interval)
State Upper Limit: 24,096,355,705 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 23,008,073,079 (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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