taxes Property Tax

School and Appraisal Districts Property Value Study 2012 Report

2012 Confidence Interval Detail
057/Dallas
057-909/Garland ISD

Category Summary

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

Stratum
Variance
A 2,347,129,250 1.0029 2,340,342,257 10 26,871 .003738076
A 2,058,341,720 0.9968 2,064,949,559 10 17,048 .004683129
A 2,181,348,400 1.0084 2,163,177,707 10 13,763 .001002914
A 2,219,509,440 0.9895 2,243,061,587 10 9,175 .001411726
B 151,330,830 0.9869 153,339,578 26 895 .009883038
B 148,561,450 0.7979 186,190,563 8 54 .015389819
B 157,608,010 0.8972 175,666,529 7 21 .005294601
B 208,610,750 0.9122 228,689,706 5 12 .017307341
C 65,003,440 0.9629 67,507,986 10 1,386 .018602372
C 65,482,310 0.9646 67,885,455 10 322 .032883179
C 58,038,160 0.9147 63,450,486 9 103 .019251553
C 66,188,300 0.8633 76,668,945 9 33 .031736490
F1 538,373,570 0.8945 601,870,956 10 1,248 .030993563
F1 515,810,140 0.8527 604,913,967 10 354 .018301893
F1 546,521,950 0.9313 586,837,700 9 145 .007654863
F1 499,046,390 0.9218 541,382,502 8 43 .006606801
L1 225,065,430 1.0439 215,600,565 10 1,434 .002851800
L1 218,728,690 1.0078 217,035,811 10 231 .001494962
L1 217,321,260 1.1306 192,217,637 9 59 .012285269
L1 259,768,850 1.0356 250,838,982 6 19 .004861759
Random Totals: 12,747,788,340   13,041,628,478 196 73,216  
Catg D1 Exception Values: 460,623   327,828      
Total Test Values (4): 12,748,248,963   13,041,956,306      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 652,097,815

Confidence Interval Values (5)

State Lower Limit: 12,389,858,491 (State Test Value minus Margin of Error Percent)
Local Test Value: 12,748,248,963 (Within Confidence Interval)
State Upper Limit: 13,694,054,121 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 13,085,994,771 (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