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2006 Confidence Interval Detail
016/Blanco
016-902/Blanco ISD

Category Summary

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

Stratum
Variance
A 12,722,650 0.9298 13,683,211 7 223 .016329366
A 12,622,000 0.9189 13,735,989 7 145 .035503163
A 12,688,040 0.8924 14,217,884 9 111 .025181866
A 12,572,219 1.0451 12,029,680 8 73 .013495910
C 11,172,610 1.1316 9,873,286 7 601 .073671761
C 11,138,157 1.0325 10,787,561 57 285 .008423408
C 11,212,522 1.0132 11,066,445 51 165 .001729057
C 10,953,013 1.0351 10,581,599 28 97 .012922364
D3 336,964,512 0.9744 345,817,438 70 6,170 .086177568
F1 7,700,361 1.0695 7,199,964 6 68 .014387461
F1 7,583,620 1.0453 7,254,970 6 33 .003955995
F1 7,518,028 1.0795 6,964,361 5 21 .005941257
F1 7,368,175 1.0844 6,794,702 4 9 .005909394
Random Totals: 462,215,907   470,007,090 265 8,001  
Catg D1 Exception Values: 14,935,940   14,749,360      
Total Test Values (4): 477,151,847   484,756,450      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 24,237,823

Confidence Interval Values (5)

State Lower Limit: 460,518,627 (State Test Value minus Margin of Error Percent)
Local Test Value: 477,151,847 (Within Confidence Interval)
State Upper Limit: 508,994,273 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 463,507,499 (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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