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2010 Confidence Interval Detail
156/Martin
156-905/Grady ISD

Category Summary

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

Stratum
Variance
D3 13,392,660 1.0258 13,055,820 19 1,446 .073733949
G1 199,317,721 0.9792 203,551,594 10 194 .015191057
G1 198,609,430 1.1011 180,373,654 9 72 .043928384
G1 196,464,983 0.9757 201,357,982 8 38 .015499396
G1 197,757,870 1.0259 192,765,250 7 17 .004800127
Random Totals: 805,542,664   791,104,300 53 1,767  
Catg J Exception Values: 3,099,956   3,321,323      
Catg D1 Exception Values: 24,995,270   31,839,480      
Total Test Values (4): 833,637,890   826,265,103      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 41,313,255

Confidence Interval Values (5)

State Lower Limit: 784,951,848 (State Test Value minus Margin of Error Percent)
Local Test Value: 833,637,890 (Within Confidence Interval)
State Upper Limit: 867,578,358 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 893,164,620 (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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