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2011 Confidence Interval Detail
233/Val Verde
233-903/Comstock CISD

Category Summary

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

Stratum
Variance
A 4,851,290 0.8837 5,489,748 13 188 .045543555
A 4,908,210 0.9351 5,248,861 12 87 .110134957
A 4,616,727 0.9472 4,874,078 11 47 .012680185
A 5,382,350 0.9969 5,399,087 13 30 .007014127
D3 23,885,829 0.7377 32,378,784 16 4,445 .461804186
G1 15,803,692 0.9936 15,905,487 9 57 .012803214
G1 15,515,783 1.0515 14,755,856 6 18 .011645458
G1 16,062,022 1.0297 15,598,739 5 11 .003641655
G1 14,055,415 1.0182 13,804,179 3 5 .007864999
Random Totals: 105,081,318   113,454,819 88 4,888  
Catg J Exception Values: 24,634,500   25,038,033      
Catg D1 Exception Values: 18,328,370   24,649,984      
Total Test Values (4): 148,044,188   163,142,836      

Margin of Error

Margin of Error Percent: 6.8328431
Margin of Error Value: 11,147,294

Confidence Interval Values (5)

Local Test Value: 148,044,188 (Outside Confidence Interval)
State Lower Limit: 151,995,542 (State Test Value minus Margin of Error Percent)
State Upper Limit: 174,290,130 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 168,241,480 (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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