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2012 Confidence Interval Detail
109/Hill
175-905/Frost ISD

Category Summary

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

Stratum
Variance
A 880,030 0.9618 914,982 8 25 .003773648
A 659,930 0.9827 671,548 7 12 .000417447
A 899,790 0.9744 923,430 7 11 .002280057
A 658,680 0.9020 730,244 4 5 .017374808
D3 2,600,660 0.9687 2,684,691 14 217 .008421783
Random Totals: 5,699,090   5,924,895 40 270  
Catg J Exception Values: 878,433   903,035      
Catg D1 Exception Values: 912,760   988,246      
Total Test Values (4): 7,490,283   7,816,176      

Margin of Error

Margin of Error Percent: 5.0000026
Margin of Error Value: 390,809

Confidence Interval Values (5)

State Lower Limit: 7,425,367 (State Test Value minus Margin of Error Percent)
Local Test Value: 7,490,283 (Within Confidence Interval)
State Upper Limit: 8,206,985 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 7,736,574 (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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