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2009 Confidence Interval Detail
236/Walker
236-901/New Waverly ISD

Category Summary

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

Stratum
Variance
A 15,827,820 0.9504 16,653,851 8 356 .005039156
A 15,542,510 0.9664 16,082,895 8 204 .015283888
A 15,859,260 1.0248 15,475,468 8 142 .003437620
A 17,821,200 1.0312 17,282,002 7 87 .006390497
C 8,078,470 0.9620 8,397,578 7 551 .003279542
C 5,360,330 0.9073 5,908,002 17 186 .006541729
C 2,920,040 0.8924 3,272,120 6 53 .011353464
D3 75,868,450 1.0079 75,273,787 20 1,981 .054910165
Random Totals: 157,278,080   158,345,703 81 3,560  
Catg D1 Exception Values: 5,779,040   6,248,646      
Total Test Values (4): 163,057,120   164,594,349      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 8,229,717

Confidence Interval Values (5)

State Lower Limit: 156,364,632 (State Test Value minus Margin of Error Percent)
Local Test Value: 163,057,120 (Within Confidence Interval)
State Upper Limit: 172,824,066 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 193,524,957 (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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