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2007 Confidence Interval Detail
109/Hill
109-913/Blum ISD

Category Summary

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

Stratum
Variance
A 3,642,604 0.8234 4,423,857 7 113 .021392608
A 3,584,960 0.9105 3,937,353 10 65 .020146224
A 3,551,013 0.9360 3,793,817 6 45 .027307559
A 3,570,765 1.0125 3,526,681 6 31 .021027513
D3 35,499,170 1.0825 32,793,691 32 1,456 .074426245
Random Totals: 49,848,512   48,475,399 61 1,710  
Catg J Exception Values: 5,169,501   5,409,331      
Catg D1 Exception Values: 4,902,490   4,008,162      
Total Test Values (4): 59,920,503   57,892,892      

Margin of Error

Margin of Error Percent: 5.5924430
Margin of Error Value: 3,237,627

Confidence Interval Values (5)

State Lower Limit: 54,655,265 (State Test Value minus Margin of Error Percent)
Local Test Value: 59,920,503 (Within Confidence Interval)
State Upper Limit: 61,130,519 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 74,996,439 (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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