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2011 Confidence Interval Detail
152/Lubbock
152-903/Slaton ISD

Category Summary

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

Stratum
Variance
A 42,329,690 0.9568 44,240,897 12 1,084 .083541517
A 42,011,168 1.0049 41,806,317 18 524 .057884356
A 40,553,029 0.9793 41,410,221 13 292 .021474138
A 45,363,775 0.9532 47,591,035 11 137 .011818925
F1 6,355,921 0.9295 6,838,000 9 104 .009189277
F1 10,517,882 0.9118 11,535,295 7 33 .013066215
F1 4,764,305 0.9572 4,977,335 4 5 .005622770
F1 6,767,681 1.0491 6,450,940 2 4 .097745298
L1 5,934,568 0.9827 6,039,043 10 58 .009040116
L1 5,166,190 1.0153 5,088,338 10 11 .003172239
L1 10,431,686 0.9897 10,540,251 4 5 .002144047
Random Totals: 220,195,895   226,517,672 100 2,257  
Catg J Exception Values: 39,298,524   36,208,770      
Catg D1 Exception Values: 12,820,400   11,584,630      
Total Test Values (4): 272,314,819   274,311,072      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 13,715,554

Confidence Interval Values (5)

State Lower Limit: 260,595,518 (State Test Value minus Margin of Error Percent)
Local Test Value: 272,314,819 (Within Confidence Interval)
State Upper Limit: 288,026,626 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 271,882,114 (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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