taxes Property Tax Assistance

2016 Confidence Interval Detail

057/Dallas
057-912/Irving ISD

Category Summary

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

Stratum
Variance
A 1,104,568,880 1.0178 1,085,251,405 18 11,447 .028597713
A 1,104,632,460 0.9268 1,191,877,924 29 8,482 .008717288
A 1,104,538,660 0.9504 1,162,182,934 32 5,792 .005077338
A 1,104,254,870 0.9958 1,108,912,302 12 2,239 .016715494
B 377,871,480 0.8656 436,542,837 8 258 .129020739
B 382,524,740 0.8375 456,745,958 7 41 .005515987
B 534,052,990 0.8888 600,869,701 6 26 .007636472
B 488,162,130 0.9831 496,553,891 5 10 .000833787
F1 745,618,670 0.9903 752,922,014 11 866 .008070313
F1 754,906,180 0.8921 846,212,510 10 177 .009601545
F1 862,905,790 0.8991 959,743,955 8 47 .023372026
F1 817,925,190 0.9496 861,336,552 5 11 .006036904
L1 308,733,650 1.0535 293,055,197 10 1,102 .014789629
L1 308,173,360 0.9995 308,327,524 9 179 .006032744
L1 352,165,710 0.9700 363,057,433 8 63 .002153518
L1 468,976,820 1.0317 454,567,045 5 13 .002944684
Random Totals: 10,820,011,580   11,378,159,182 183 30,753  
Catg D1 Exception Values: 102,648   103,860      
Total Test Values (4): 10,820,114,228   11,378,263,042      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 568,913,152

Confidence Interval Values (5)

State Lower Limit: 10,809,349,890 (State Test Value minus Margin of Error Percent)
Local Test Value: 10,820,114,228 (Within Confidence Interval)
State Upper Limit: 11,947,176,194 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 10,458,401,068 (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