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2009 Confidence Interval Detail
138/Knox
138-902/Knox City-O'Brien CISD

Category Summary

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

Stratum
Variance
A 2,880,405 0.9253 3,112,942 7 187 .055180479
A 3,129,805 0.9743 3,212,363 8 128 .008166080
A 3,001,458 0.8902 3,371,667 7 83 .093312098
A 3,207,630 0.9086 3,530,299 8 56 .003148682
D3 2,892,080 0.9867 2,931,063 27 595 .026201043
G1 1,649,209 1.1239 1,467,398 4 8 .025262885
G1 1,783,410 0.9796 1,820,549 3 5 .005705739
L1 1,371,825 0.9293 1,476,192 7 108 .116905496
L1 1,106,294 0.9838 1,124,511 6 33 .005418562
L1 1,732,590 1.0156 1,705,977 6 17 .000330345
Random Totals: 22,754,706   23,752,961 83 1,220  
Catg J Exception Values: 1,244,061   1,113,437      
Catg D1 Exception Values: 6,852,900   7,063,300      
Catg G1 Exception Values: 17,593,839   17,414,847      
Catg L1 Exception Values: 1,374,967   1,375,798      
Total Test Values (4): 49,820,473   50,720,343      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 2,536,017

Confidence Interval Values (5)

State Lower Limit: 48,184,326 (State Test Value minus Margin of Error Percent)
Local Test Value: 49,820,473 (Within Confidence Interval)
State Upper Limit: 53,256,360 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 57,864,605 (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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