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2011 Confidence Interval Detail
152/Lubbock
152-902/New Deal ISD

Category Summary

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

Stratum
Variance
A 15,351,756 0.9515 16,134,268 10 460 .015238037
A 15,477,827 0.9815 15,769,564 11 188 .006664787
A 15,198,451 0.9663 15,728,502 10 126 .005903697
A 15,866,759 0.9932 15,975,392 11 78 .002535288
D3 21,802,004 0.9273 23,511,274 17 947 .019824887
G1 6,065,838 1.0143 5,980,319 5 12 .012491794
Random Totals: 89,762,635   93,099,319 64 1,811  
Catg D1 Exception Values: 23,318,174   21,036,538      
Catg G1 Exception Values: 27,798,523   27,468,428      
Total Test Values (4): 140,879,332   141,604,285      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 7,080,214

Confidence Interval Values (5)

State Lower Limit: 134,524,071 (State Test Value minus Margin of Error Percent)
Local Test Value: 140,879,332 (Within Confidence Interval)
State Upper Limit: 148,684,499 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 200,180,078 (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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