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2009 Confidence Interval Detail
207/Schleicher
207-901/Schleicher County ISD

Category Summary

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

Stratum
Variance
A 5,403,550 0.8737 6,184,674 9 335 .062186575
A 5,575,310 0.7809 7,139,595 7 186 .043525215
A 5,440,890 0.7198 7,558,891 8 111 .107896425
A 5,360,900 0.8409 6,375,193 6 57 .458367034
D3 17,714,917 0.8110 21,843,301 10 3,643 .283256236
G1 42,592,641 1.0690 39,843,443 8 316 .078828414
G1 42,697,590 1.0465 40,800,373 8 114 .012011370
G1 42,759,144 1.0482 40,792,925 5 51 .005032395
G1 42,070,951 1.1443 36,765,665 5 16 .056751948
Random Totals: 209,615,893   207,304,060 66 4,829  
Catg J Exception Values: 5,835,176   5,209,068      
Catg D1 Exception Values: 27,260,403   38,107,404      
Total Test Values (4): 242,711,472   250,620,532      

Margin of Error

Margin of Error Percent: 5.4802685
Margin of Error Value: 13,734,678

Confidence Interval Values (5)

State Lower Limit: 236,885,854 (State Test Value minus Margin of Error Percent)
Local Test Value: 242,711,472 (Within Confidence Interval)
State Upper Limit: 264,355,210 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 335,213,006 (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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