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2010 Confidence Interval Detail
174/Nacogdoches
174-909/Martinsville ISD

Category Summary

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

Stratum
Variance
A 3,169,070 0.9672 3,276,541 9 68 .001716164
A 2,931,170 0.9544 3,071,218 8 38 .000472444
A 3,412,150 0.9534 3,578,928 7 31 .003360486
A 2,924,170 0.9616 3,040,942 6 16 .000368343
D3 26,032,620 1.0625 24,501,289 20 1,051 .029202324
G1 7,572,060 0.8250 9,178,255 8 25 .065319339
G1 7,483,550 1.0269 7,287,516 5 12 .005155015
G1 7,092,940 1.0614 6,682,627 4 8 .007607390
G1 6,935,070 1.1306 6,133,973 3 4 .016098461
Random Totals: 67,552,800   66,751,289 70 1,253  
Catg J Exception Values: 871,102   1,106,702      
Catg D1 Exception Values: 6,962,570   4,084,899      
Total Test Values (4): 75,386,472   71,942,890      

Margin of Error

Margin of Error Percent: 5.0000007
Margin of Error Value: 3,597,145

Confidence Interval Values (5)

State Lower Limit: 68,345,745 (State Test Value minus Margin of Error Percent)
Local Test Value: 75,386,472 (Within Confidence Interval)
State Upper Limit: 75,540,035 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 87,878,377 (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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