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2008 Confidence Interval Detail
152/Lubbock
152-909/Shallowater ISD

Category Summary

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

Stratum
Variance
A 24,619,264 0.8110 30,356,676 16 510 .156304628
A 30,120,429 0.9707 31,029,596 19 316 .020366170
A 30,093,780 0.9619 31,285,768 17 197 .008569087
A 32,987,971 0.9531 34,611,238 17 136 .007208233
D3 10,231,887 0.9188 11,136,142 25 718 .073273678
G1 16,837,762 0.8542 19,711,733 13 29 .030271181
L1 1,230,797 0.9606 1,281,279 7 46 .002739922
L1 1,866,394 0.9799 1,904,678 5 23 .001208549
L1 1,273,079 0.9876 1,289,063 3 4 .000291955
Random Totals: 149,261,363   162,606,173 122 1,979  
Catg D1 Exception Values: 16,074,797   12,175,320      
Catg G1 Exception Values: 19,016,061   22,965,790      
Catg L1 Exception Values: 6,458,304   6,254,470      
Total Test Values (4): 190,810,525   204,001,753      

Margin of Error

Margin of Error Percent: 5.0000002
Margin of Error Value: 10,200,088

Confidence Interval Values (5)

Local Test Value: 190,810,525 (Outside Confidence Interval)
State Lower Limit: 193,801,665 (State Test Value minus Margin of Error Percent)
State Upper Limit: 214,201,841 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 217,806,211 (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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