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2007 Confidence Interval Detail
245/Willacy
245-902/Lyford CISD

Category Summary

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

Stratum
Variance
A 11,504,866 0.9642 11,932,033 8 615 .030776855
A 11,503,009 0.9506 12,100,788 7 351 .034629951
A 11,462,665 0.9631 11,901,843 7 234 .015159770
A 11,479,045 0.9296 12,348,370 7 123 .011277271
D3 20,262,872 0.9733 20,818,732 14 3,058 .014067209
G1 16,706,948 0.9595 17,412,140 14 37 .066144598
L1 708,504 0.9256 765,454 6 25 .034815923
L1 678,137 0.9789 692,754 4 8 .003405175
L1 1,259,141 0.9382 1,342,082 3 4 .003821506
Random Totals: 85,565,187   89,314,196 70 4,455  
Catg J Exception Values: 6,719,656   6,773,906      
Catg D1 Exception Values: 48,748,658   48,451,865      
Catg G1 Exception Values: 17,537,681   19,847,111      
Catg L1 Exception Values: 7,354,096   7,936,390      
Total Test Values (4): 165,925,278   172,323,468      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 8,616,173

Confidence Interval Values (5)

State Lower Limit: 163,707,295 (State Test Value minus Margin of Error Percent)
Local Test Value: 165,925,278 (Within Confidence Interval)
State Upper Limit: 180,939,641 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 167,358,834 (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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