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2010 Confidence Interval Detail
222/Terrell
222-901/Terrell County ISD

Category Summary

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

Stratum
Variance
A 4,736,216 0.8554 5,536,844 12 205 .026468919
A 4,608,093 0.9627 4,786,634 10 96 .012842837
A 5,564,806 0.9629 5,779,215 14 77 .005462121
A 5,548,460 0.9461 5,864,560 12 48 .011837614
G1 120,475,089 1.0103 119,246,846 10 257 .014124553
G1 122,167,673 1.0160 120,243,773 9 65 .001342091
G1 120,765,559 0.9895 122,047,053 8 30 .001216280
G1 117,022,415 1.0145 115,349,842 6 14 .002184486
Random Totals: 500,888,311   498,854,767 81 792  
Catg J Exception Values: 25,953,071   26,550,212      
Catg D1 Exception Values: 16,250,283   24,357,146      
Total Test Values (4): 543,091,665   549,762,125      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 27,488,106

Confidence Interval Values (5)

State Lower Limit: 522,274,019 (State Test Value minus Margin of Error Percent)
Local Test Value: 543,091,665 (Within Confidence Interval)
State Upper Limit: 577,250,231 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 642,754,072 (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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