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2009 Confidence Interval Detail
165/Midland
165-902/Greenwood ISD

Category Summary

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

Stratum
Variance
A 46,043,020 0.8655 53,198,174 26 483 .030590047
A 48,072,150 0.9583 50,163,988 27 302 .003085232
A 48,892,930 0.9580 51,036,461 21 221 .020685048
A 56,204,150 1.0160 55,319,045 19 171 .015845561
D3 41,761,530 0.9903 42,170,585 19 1,093 .070250691
G1 82,410,130 1.0183 80,929,127 7 156 .005081911
G1 83,499,216 1.0507 79,470,083 6 64 .020721795
G1 83,592,168 1.0128 82,535,711 6 26 .017318183
G1 79,746,999 0.9912 80,455,003 4 6 .001201721
Random Totals: 570,222,293   575,278,177 135 2,522  
Catg D1 Exception Values: 4,691,240   8,681,508      
Total Test Values (4): 574,913,533   583,959,685      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 29,197,984

Confidence Interval Values (5)

State Lower Limit: 554,761,701 (State Test Value minus Margin of Error Percent)
Local Test Value: 574,913,533 (Within Confidence Interval)
State Upper Limit: 613,157,669 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 670,804,139 (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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