taxes Property Tax Assistance

2017 Confidence Interval Detail

220/Tarrant
220-902/Birdville ISD

Category Summary

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

Stratum
Variance
A 1,117,115,565 0.9466 1,180,134,761 131 10,336 .017155220
A 1,590,998,164 0.9762 1,629,787,097 144 10,631 .017190120
A 1,629,719,882 0.9703 1,679,604,124 146 7,903 .012868780
A 2,000,464,810 0.9792 2,042,958,344 141 6,126 .007568726
B 186,858,027 1.1294 165,448,935 17 550 .004749477
B 165,185,447 0.9771 169,056,849 7 14 .045702416
B 305,228,220 0.9846 310,002,255 6 15 .017341555
B 463,133,852 1.0744 431,062,781 5 13 .008300471
F1 397,716,929 0.8973 443,237,411 8 852 .043485836
F1 428,708,495 0.8670 494,473,466 10 296 .040907248
F1 465,433,919 0.9066 513,383,983 10 116 .063585090
F1 580,893,405 0.8096 717,506,676 8 38 .005298483
L1 212,320,484 1.0700 198,430,359 11 1,012 .009515426
L1 213,140,907 1.1091 192,174,652 11 188 .045982124
L1 205,588,961 0.9849 208,740,949 9 54 .006819638
L1 252,007,466 0.9015 279,542,392 4 13 .016129564
Random Totals: 10,214,514,533   10,655,545,034 668 38,157  
Catg D1 Exception Values: 43,966   28,397      
Total Test Values (4): 10,214,558,499   10,655,573,431      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 532,778,671

Confidence Interval Values (5)

State Lower Limit: 10,122,794,760 (State Test Value minus Margin of Error Percent)
Local Test Value: 10,214,558,499 (Within Confidence Interval)
State Upper Limit: 11,188,352,102 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 9,111,589,224 (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, D2, E, 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