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2009 Confidence Interval Detail
126/Johnson
126-901/Alvarado ISD

Category Summary

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

Stratum
Variance
A 100,466,978 1.2261 81,940,281 30 1,713 .079535800
A 106,842,810 0.9780 109,246,227 29 1,204 .021205851
A 113,279,275 1.0025 112,996,783 36 890 .013534813
A 114,454,667 1.0149 112,774,329 12 520 .041451888
D3 126,210,062 0.9255 136,369,597 12 2,271 .009227974
F1 16,558,862 1.0569 15,667,388 9 128 .029014854
F1 19,675,996 1.0056 19,566,424 7 63 .005754264
F1 16,166,272 0.8796 18,379,118 7 27 .011067589
F1 25,214,837 0.8569 29,425,647 6 14 .044220879
G1 150,748,885 1.0075 149,626,685 14 130 .001603341
G1 151,414,243 1.0319 146,733,446 7 63 .002181397
G1 153,003,235 1.0221 149,694,976 7 43 .011428450
G1 147,025,933 1.0225 143,790,644 7 27 .002158665
Random Totals: 1,241,062,055   1,226,211,545 183 7,093  
Catg J Exception Values: 39,334,592   42,200,095      
Catg D1 Exception Values: 4,046,701   3,797,734      
Total Test Values (4): 1,284,443,348   1,272,209,374      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 63,610,469

Confidence Interval Values (5)

State Lower Limit: 1,208,598,905 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,284,443,348 (Within Confidence Interval)
State Upper Limit: 1,335,819,843 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,724,056,864 (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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