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2011 Confidence Interval Detail
101/Harris
237-904/Waller ISD

Category Summary

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

Stratum
Variance
A 89,036,298 1.0050 88,593,331 29 1,323 .035751071
A 87,529,652 1.0728 81,589,907 13 620 .034699891
A 89,647,821 0.9215 97,284,667 12 398 .023461774
A 91,915,010 0.9985 92,053,090 10 210 .032955326
C 10,038,918 0.9693 10,356,874 12 439 .015723260
C 12,307,199 0.9723 12,657,821 10 270 .041904270
C 9,833,380 0.9978 9,855,061 10 90 .018586142
C 11,136,452 1.0553 10,552,878 10 21 .092348811
D3 76,936,138 0.9502 80,968,362 15 1,229 .003143671
F1 20,255,007 0.9446 21,442,946 8 40 .006226492
F1 16,841,408 0.9088 18,531,479 6 15 .004611367
F1 18,576,536 0.8904 20,863,136 5 9 .014698596
Random Totals: 534,053,819   544,749,552 140 4,664  
Catg D1 Exception Values: 5,952,525   6,007,955      
Catg F1 Exception Values: 108,433,766   105,893,892      
Total Test Values (4): 648,440,110   656,651,399      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 32,832,570

Confidence Interval Values (5)

State Lower Limit: 623,818,829 (State Test Value minus Margin of Error Percent)
Local Test Value: 648,440,110 (Within Confidence Interval)
State Upper Limit: 689,483,969 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 752,790,974 (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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