taxes Property Tax

School and Appraisal Districts Property Value Study 2012 Report

2012 Confidence Interval Detail
057/Dallas
057-905/Dallas ISD

Category Summary

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

Stratum
Variance
A 9,122,301,290 0.9822 9,287,620,943 10 106,484 .005399692
A 9,381,558,690 1.0045 9,339,530,801 10 40,197 .010188800
A 9,271,234,930 1.0198 9,091,228,604 10 19,321 .006794609
A 9,399,817,930 1.0222 9,195,673,968 10 6,420 .001554387
B 1,701,389,220 0.9124 1,864,740,487 188 4,752 .214381901
B 1,754,815,570 0.8782 1,998,195,821 24 328 .027929243
B 1,703,475,870 0.9254 1,840,799,514 10 104 .028534894
B 2,593,939,400 0.8479 3,059,251,563 9 68 .025000255
C 495,478,260 0.9252 535,536,381 87 10,903 .059917600
C 491,680,890 0.8795 559,045,924 46 1,348 .041154670
C 469,138,810 0.8323 563,665,517 10 366 .052905559
C 498,909,290 0.9162 544,541,901 9 105 .025460159
F1 5,024,317,640 0.9421 5,333,104,384 145 6,536 .222038028
F1 4,877,889,220 0.9829 4,962,752,284 28 1,237 .018868867
F1 5,068,990,030 0.9268 5,469,346,170 21 334 .029907292
F1 5,849,351,140 0.9770 5,987,053,367 11 83 .007285659
L1 2,290,461,050 1.0863 2,108,497,699 10 8,878 .011478330
L1 2,366,887,470 1.0254 2,308,257,724 10 1,225 .000554956
L1 2,345,197,330 1.0319 2,272,698,256 10 304 .008900819
L1 2,709,344,340 0.9824 2,757,883,082 9 86 .003764539
Random Totals: 77,416,178,370   79,079,424,390 667 209,079  
Catg J Exception Values: 715,085,169   729,234,807      
Catg D1 Exception Values: 3,405,116   3,141,385      
Total Test Values (4): 78,134,668,655   79,811,800,582      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 3,990,590,029

Confidence Interval Values (5)

State Lower Limit: 75,821,210,553 (State Test Value minus Margin of Error Percent)
Local Test Value: 78,134,668,655 (Within Confidence Interval)
State Upper Limit: 83,802,390,611 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 76,540,878,926 (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