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2009 Confidence Interval Detail
214/Starr
214-903/Roma ISD

Category Summary

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

Stratum
Variance
A 41,532,400 0.9734 42,667,352 15 2,340 .023374611
A 42,149,940 0.8109 51,979,208 15 1,395 .064416122
A 42,790,880 0.8332 51,357,273 15 914 .040603196
A 45,454,170 0.7592 59,871,141 15 508 .069141391
C 7,223,950 0.6809 10,609,414 7 1,429 .321807057
C 7,269,570 0.9893 7,348,196 7 987 .155411594
C 7,027,730 0.8473 8,294,264 7 568 .143531476
C 7,273,900 0.6062 11,999,175 7 118 .401392479
D3 13,957,340 0.9202 15,167,724 19 8,581 .080484062
F1 9,603,350 0.7825 12,272,652 8 205 .180652997
F1 9,464,840 0.8678 10,906,707 7 90 .010611179
F1 9,331,280 0.7488 12,461,645 7 47 .039423428
F1 10,138,780 0.8580 11,816,760 6 21 .011326192
G1 38,762,720 0.9499 40,807,159 12 73 .007998724
G1 38,469,708 0.9703 39,647,231 9 22 .043449489
G1 36,126,490 1.0172 35,515,621 7 13 .015718634
G1 37,541,310 1.0443 35,948,779 4 6 .003165362
Random Totals: 404,118,358   458,670,301 167 17,317  
Catg J Exception Values: 12,208,128   12,575,964      
Catg D1 Exception Values: 22,742,430   24,268,926      
Total Test Values (4): 439,068,916   495,515,191      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 24,775,760

Confidence Interval Values (5)

Local Test Value: 439,068,916 (Outside Confidence Interval)
State Lower Limit: 470,739,431 (State Test Value minus Margin of Error Percent)
State Upper Limit: 520,290,951 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 491,222,288 (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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