Quick Start for:

2007 Confidence Interval Detail
228/Trinity
228-904/Centerville ISD

Category Summary

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

Stratum
Variance
A 1,100,204 0.9413 1,168,813 6 52 .036248481
A 1,123,357 0.7845 1,431,940 6 31 .008564615
A 1,126,684 0.7743 1,455,100 5 19 .039808784
A 1,035,788 1.0525 984,122 6 10 .029980390
D3 7,992,718 0.8157 9,798,600 18 1,170 .063203070
Random Totals: 12,378,751   14,838,575 41 1,282  
Catg D1 Exception Values: 6,793,402   6,637,369      
Catg G1 Exception Values: 8,138,106   7,955,819      
Total Test Values (4): 27,310,259   29,431,763      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 1,471,588

Confidence Interval Values (5)

Local Test Value: 27,310,259 (Outside Confidence Interval)
State Lower Limit: 27,960,175 (State Test Value minus Margin of Error Percent)
State Upper Limit: 30,903,351 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 24,769,667 (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

Required Plug-ins