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2009 Confidence Interval Detail
154/Madison
154-903/North Zulch ISD

Category Summary

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

Stratum
Variance
A 3,368,960 0.9142 3,685,145 7 118 .005357259
A 3,290,530 0.9327 3,527,962 6 63 .003747246
A 3,239,810 0.9553 3,391,406 6 36 .001564582
A 5,725,480 1.0048 5,698,129 6 31 .000939256
D3 38,060,335 0.9784 38,900,588 21 1,581 .010562756
G1 5,558,372 0.8565 6,489,635 6 31 .117201869
G1 5,721,598 0.9535 6,000,627 5 14 .041551475
G1 6,565,678 0.8868 7,403,787 4 8 .029577196
G1 4,350,443 0.8884 4,896,942 2 3 .141781656
Random Totals: 75,881,206   79,994,221 63 1,885  
Catg J Exception Values: 6,545,540   6,746,842      
Catg D1 Exception Values: 2,957,249   3,003,088      
Total Test Values (4): 85,383,995   89,744,151      

Margin of Error

Margin of Error Percent: 5.0000005
Margin of Error Value: 4,487,208

Confidence Interval Values (5)

State Lower Limit: 85,256,943 (State Test Value minus Margin of Error Percent)
Local Test Value: 85,383,995 (Within Confidence Interval)
State Upper Limit: 94,231,359 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 112,421,551 (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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