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2010 Confidence Interval Detail
039/Clay
039-902/Henrietta ISD

Category Summary

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

Stratum
Variance
A 33,625,890 1.0620 31,662,797 16 759 .016003570
A 34,077,380 0.9734 35,008,609 14 419 .003098292
A 38,428,850 1.0017 38,363,632 14 330 .003820775
A 35,960,980 0.9371 38,374,752 12 195 .016469395
D3 39,050,600 0.9728 40,142,475 31 3,065 .084010735
G1 1,879,350 0.8849 2,123,799 5 10 .051735090
G1 1,823,530 1.0290 1,772,138 4 6 .000260892
G1 1,832,840 0.9530 1,923,232 3 4 .002891085
Random Totals: 186,679,420   189,371,434 99 4,788  
Catg J Exception Values: 50,693,149   49,664,598      
Catg D1 Exception Values: 18,082,930   18,005,880      
Catg G1 Exception Values: 23,430,960   21,858,319      
Total Test Values (4): 278,886,459   278,900,231      

Margin of Error

Margin of Error Percent: 5.0000002
Margin of Error Value: 13,945,012

Confidence Interval Values (5)

State Lower Limit: 264,955,219 (State Test Value minus Margin of Error Percent)
Local Test Value: 278,886,459 (Within Confidence Interval)
State Upper Limit: 292,845,243 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 316,026,923 (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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