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2008 Confidence Interval Detail
212/Smith
212-905/Tyler ISD

Category Summary

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

Stratum
Variance
A 841,412,320 0.9327 902,125,356 45 11,682 .014405828
A 900,098,900 0.9718 926,218,255 71 7,176 .006171107
A 948,549,200 0.9729 974,970,912 43 4,887 .007216520
A 945,725,200 1.0024 943,460,894 56 2,359 .012418571
B 87,917,490 1.0170 86,447,876 7 781 .007777599
B 83,690,410 0.8641 96,852,691 6 80 .079438727
B 77,371,800 0.9745 79,396,408 5 15 .001617592
B 109,461,200 0.9906 110,499,899 4 10 .001463063
F1 392,454,590 1.0672 367,742,307 14 1,393 .123738660
F1 395,682,470 1.0641 371,847,073 7 369 .106582801
F1 416,639,320 0.9446 441,074,868 7 130 .016048223
F1 379,590,590 1.0044 377,927,708 6 37 .000423838
L1 182,479,715 0.9529 191,499,334 7 1,438 .001972914
L1 183,147,239 0.9642 189,947,354 9 270 .004347683
L1 182,664,984 0.9788 186,621,357 6 82 .002227659
L1 180,822,039 1.0045 180,011,985 6 14 .000347743
Random Totals: 6,307,707,467   6,426,644,277 299 30,723  
Catg D1 Exception Values: 12,032,401   8,558,587      
Total Test Values (4): 6,319,739,868   6,435,202,864      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 321,760,143

Confidence Interval Values (5)

State Lower Limit: 6,113,442,721 (State Test Value minus Margin of Error Percent)
Local Test Value: 6,319,739,868 (Within Confidence Interval)
State Upper Limit: 6,756,963,007 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 6,943,352,971 (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

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