taxes Property Tax

School and Appraisal Districts Property Value Study 2012 Report

2012 Confidence Interval Detail
057/Dallas
057-903/Carrollton-Farmers Branch ISD

Category Summary

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

Stratum
Variance
A 837,277,230 0.9852 849,855,085 10 7,309 .003843884
A 921,526,270 1.0081 914,121,883 10 5,060 .001093182
A 883,303,340 1.0227 863,697,409 10 3,492 .001367708
A 912,758,580 1.0120 901,935,356 10 2,268 .002408213
B 265,188,600 0.7891 336,064,631 10 50 .115460921
B 337,985,400 0.9294 363,659,781 9 24 .012446701
B 347,556,520 0.8812 394,412,755 6 16 .018727213
B 504,542,410 0.9117 553,408,369 5 15 .005439671
C 69,405,020 0.8898 78,000,697 11 709 .103895413
C 60,030,440 0.9144 65,650,087 9 97 .006847602
C 76,661,310 0.9207 83,264,158 10 46 .023119780
C 48,153,830 1.0383 46,377,569 6 10 .006426175
F1 867,641,370 1.0227 848,383,074 13 674 .005595310
F1 864,404,820 0.9617 898,830,009 9 232 .021864155
F1 870,099,560 0.9190 946,789,510 10 99 .021927483
F1 974,528,600 0.8733 1,115,915,035 10 42 .015535165
L1 459,278,980 1.0447 439,627,625 10 1,171 .029720064
L1 422,051,620 1.0130 416,635,360 9 177 .002462302
L1 429,275,370 1.0683 401,830,357 9 56 .007207005
L1 509,539,130 1.0402 489,847,270 5 13 .002242466
Random Totals: 10,661,208,400   11,008,306,020 181 21,560  
Catg J Exception Values: 119,777,357   122,509,961      
Catg D1 Exception Values: 65,290   15,082      
Total Test Values (4): 10,781,051,047   11,130,831,063      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 556,541,553

Confidence Interval Values (5)

State Lower Limit: 10,574,289,510 (State Test Value minus Margin of Error Percent)
Local Test Value: 10,781,051,047 (Within Confidence Interval)
State Upper Limit: 11,687,372,616 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 10,436,023,530 (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