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2007 Confidence Interval Detail
039/Clay
039-905/Midway ISD

Category Summary

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

Stratum
Variance
A 1,365,519 1.0133 1,347,596 7 50 .037556518
A 1,375,502 1.0004 1,374,952 10 24 .011419546
A 1,424,260 1.0899 1,306,780 5 16 .004031352
D3 23,078,040 1.0136 22,768,390 24 2,197 .014552683
G1 7,038,030 0.8714 8,076,693 15 90 .074851035
G1 6,985,640 0.8598 8,124,727 15 38 .044318651
G1 7,225,190 0.8846 8,167,748 12 19 .025424708
G1 6,612,840 0.9639 6,860,504 6 7 .051567093
Random Totals: 55,105,021   58,027,390 94 2,441  
Catg J Exception Values: 1,444,482   1,511,958      
Catg D1 Exception Values: 11,782,440   10,066,440      
Catg A Exception Values: 1,287,270   1,270,032      
Total Test Values (4): 69,619,213   70,875,820      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 3,543,791

Confidence Interval Values (5)

State Lower Limit: 67,332,029 (State Test Value minus Margin of Error Percent)
Local Test Value: 69,619,213 (Within Confidence Interval)
State Upper Limit: 74,419,611 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 70,038,739 (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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