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2010 Confidence Interval Detail
174/Nacogdoches
174-911/Douglass ISD

Category Summary

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

Stratum
Variance
A 11,897,530 0.9462 12,574,012 9 148 .005300175
A 12,158,710 0.9863 12,327,598 9 73 .000234760
A 11,548,260 0.9785 11,802,003 8 50 .000526612
A 12,191,330 0.9773 12,474,501 8 36 .000214200
D3 32,637,990 1.0454 31,220,576 15 1,288 .013909640
G1 13,073,412 0.9380 13,937,539 10 89 .010033828
G1 13,133,460 0.9639 13,625,335 10 37 .023473915
G1 13,667,260 1.0119 13,506,532 7 22 .003380760
G1 12,396,900 1.0439 11,875,563 5 12 .000698578
Random Totals: 132,704,852   133,343,659 81 1,755  
Catg J Exception Values: 2,642,567   2,898,907      
Catg D1 Exception Values: 10,127,720   5,349,667      
Total Test Values (4): 145,475,139   141,592,233      

Margin of Error

Margin of Error Percent: 5.0000002
Margin of Error Value: 7,079,612

Confidence Interval Values (5)

State Lower Limit: 134,512,621 (State Test Value minus Margin of Error Percent)
Local Test Value: 145,475,139 (Within Confidence Interval)
State Upper Limit: 148,671,845 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 179,281,069 (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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