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2012 Confidence Interval Detail
125/Jim Wells
125-903/Orange Grove ISD

Category Summary

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

Stratum
Variance
A 10,919,566 0.9795 11,148,102 11 263 .005372145
A 10,954,220 0.8812 12,431,026 9 125 .051329792
A 11,228,370 0.9327 12,038,565 9 84 .050126582
A 11,566,251 1.0276 11,255,597 8 49 .003109559
D3 156,048,999 0.9875 158,024,303 20 6,723 .008364390
Random Totals: 200,717,406   204,897,593 57 7,244  
Catg D1 Exception Values: 13,757,859   14,099,108      
Total Test Values (4): 214,475,265   218,996,701      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 10,949,835

Confidence Interval Values (5)

State Lower Limit: 208,046,866 (State Test Value minus Margin of Error Percent)
Local Test Value: 214,475,265 (Within Confidence Interval)
State Upper Limit: 229,946,536 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 228,772,410 (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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