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2009 Confidence Interval Detail
174/Nacogdoches
174-904/Nacogdoches ISD

Category Summary

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

Stratum
Variance
A 214,437,880 0.9544 224,683,445 35 3,871 .017687612
A 228,241,070 0.9621 237,232,169 25 2,134 .013741928
A 233,613,820 1.0072 231,943,824 25 1,429 .012045125
A 256,860,190 0.9563 268,597,919 26 914 .007961742
B 25,206,190 0.8769 28,744,657 15 129 .026631951
B 24,519,300 0.8698 28,189,584 10 19 .006673883
B 20,117,810 0.8265 24,340,968 5 6 .001319427
D3 150,161,270 0.9300 161,463,731 20 4,471 .017883039
F1 70,736,030 1.0012 70,651,249 15 453 .013800507
F1 75,524,130 0.9229 81,833,492 14 176 .013469114
F1 82,130,580 0.9341 87,924,826 12 77 .021121879
F1 82,667,810 0.9173 90,120,800 8 22 .009189279
L1 32,955,370 0.9993 32,978,455 7 460 .001285527
L1 34,279,230 0.9781 35,046,754 7 107 .004360054
L1 34,318,300 0.9833 34,901,149 6 38 .000406187
L1 28,321,780 0.9871 28,691,906 4 6 .000613479
Random Totals: 1,594,090,760   1,667,344,928 234 14,312  
Catg D1 Exception Values: 20,191,280   12,201,900      
Catg B Exception Values: 20,389,910   22,113,919      
Total Test Values (4): 1,634,671,950   1,701,660,747      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 85,083,037

Confidence Interval Values (5)

State Lower Limit: 1,616,577,710 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,634,671,950 (Within Confidence Interval)
State Upper Limit: 1,786,743,784 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,837,749,465 (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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