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2007 Confidence Interval Detail
109/Hill
109-914/Penelope ISD

Category Summary

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

Stratum
Variance
A 1,556,668 1.0071 1,545,694 12 51 .087516985
A 1,581,699 1.0288 1,537,421 10 29 .008218389
A 1,552,203 1.0475 1,481,817 8 18 .011956540
A 1,520,869 0.9904 1,535,611 10 11 .004865077
D3 9,906,820 0.9313 10,637,625 19 753 .004911970
Random Totals: 16,118,259   16,738,168 59 862  
Catg J Exception Values: 1,275,650   1,207,010      
Catg D1 Exception Values: 3,761,402   3,269,825      
Total Test Values (4): 21,155,311   21,215,003      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 1,060,750

Confidence Interval Values (5)

State Lower Limit: 20,154,253 (State Test Value minus Margin of Error Percent)
Local Test Value: 21,155,311 (Within Confidence Interval)
State Upper Limit: 22,275,753 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 19,389,699 (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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