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2009 Confidence Interval Detail
163/Medina
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 118,261,899 1.0086 117,253,519 19 1,775 .182890537
A 123,837,848 0.9253 133,835,349 14 879 .048642113
A 125,031,025 1.0406 120,152,820 9 577 .006904852
A 134,523,326 1.0644 126,384,185 15 411 .026337853
C 14,908,280 0.9575 15,570,005 7 637 .005830039
C 22,326,270 1.0017 22,288,380 7 507 .010402148
C 9,525,680 0.8896 10,707,824 7 166 .022284378
C 16,546,461 1.1053 14,970,109 7 159 .033751309
D3 110,216,726 0.9356 117,803,256 10 4,419 .394899897
F1 10,668,250 0.9886 10,791,270 6 88 .045679796
F1 11,226,500 0.9603 11,690,618 6 38 .061396337
F1 14,842,360 1.0248 14,483,177 5 27 .019574456
F1 10,504,900 0.9867 10,646,498 3 6 .074034875
Random Totals: 722,419,525   726,577,010 115 9,689  
Catg D1 Exception Values: 18,008,471   17,457,156      
Total Test Values (4): 740,427,996   744,034,166      

Margin of Error

Margin of Error Percent: 7.4472772
Margin of Error Value: 55,410,287

Confidence Interval Values (5)

State Lower Limit: 688,623,879 (State Test Value minus Margin of Error Percent)
Local Test Value: 740,427,996 (Within Confidence Interval)
State Upper Limit: 799,444,453 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 735,346,547 (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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