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2008 Confidence Interval Detail
015/Bexar
163-908/Medina Valley ISD

Category Summary

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

Stratum
Variance
A 106,760,242 0.9618 111,000,460 13 1,046 .007849871
C 16,354,160 1.1570 14,134,970 10 321 .044200863
D3 56,067,367 1.1942 46,949,730 12 383 .036455551
F1 52,138,226 0.9547 54,612,157 10 102 .000305074
Random Totals: 231,319,995   226,697,317 45 1,852  
Catg D1 Exception Values: 2,316,292   2,628,173      
Total Test Values (4): 233,636,287   229,325,490      

Margin of Error

Margin of Error Percent: 5.0000002
Margin of Error Value: 11,466,275

Confidence Interval Values (5)

State Lower Limit: 217,859,215 (State Test Value minus Margin of Error Percent)
Local Test Value: 233,636,287 (Within Confidence Interval)
State Upper Limit: 240,791,765 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 235,067,631 (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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