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2011 Confidence Interval Detail
152/Lubbock
152-910/Idalou ISD

Category Summary

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

Stratum
Variance
A 22,063,241 0.7960 27,717,639 11 396 .098823722
A 21,831,530 1.0737 20,332,989 10 207 .084564899
A 22,617,061 1.1283 20,045,255 12 153 .018302241
A 22,773,857 1.1406 19,966,559 10 93 .030255974
D3 22,390,249 0.9265 24,166,486 16 876 .005481167
F1 2,971,737 0.9943 2,988,773 8 48 .037588507
F1 3,380,002 0.9739 3,470,584 6 14 .003921853
F1 3,076,511 1.0170 3,025,085 3 5 .000805783
G1 29,260,657 1.0239 28,577,651 4 5 .001409528
L1 8,968,440 0.9941 9,021,668 10 56 .009682178
L1 12,326,384 0.9675 12,740,449 5 12 .005664289
L1 13,133,965 0.9648 13,613,148 3 5 .011683637
Random Totals: 184,793,634   185,666,286 98 1,870  
Catg D1 Exception Values: 27,101,539   24,728,976      
Catg F1 Exception Values: 2,422,802   2,423,873      
Total Test Values (4): 214,317,975   212,819,135      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 10,640,957

Confidence Interval Values (5)

State Lower Limit: 202,178,178 (State Test Value minus Margin of Error Percent)
Local Test Value: 214,317,975 (Within Confidence Interval)
State Upper Limit: 223,460,092 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 213,833,925 (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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