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2007 Confidence Interval Detail
158/Matagorda
158-906/Van Vleck ISD

Category Summary

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

Stratum
Variance
A 60,338,496 0.8512 70,886,391 19 1,172 .069356475
A 60,153,199 0.8993 66,888,912 19 615 .058839300
A 60,235,198 0.9120 66,047,366 22 447 .032459989
A 60,045,935 0.9734 61,686,804 15 285 .038832055
C 17,957,302 0.8094 22,185,943 26 2,074 .246176015
C 11,626,088 0.7835 14,838,657 10 470 .151113099
C 13,659,438 0.9800 13,938,202 13 348 .071140023
C 11,030,478 1.0621 10,385,536 23 169 .025897275
D3 32,755,327 0.9246 35,426,484 21 3,031 .040744571
G1 13,992,700 0.7736 18,087,771 5 19 .068182253
G1 12,368,070 0.9065 13,643,762 3 4 .031995227
G1 25,451,490 1.1016 23,104,112 2 3 .006514176
Random Totals: 379,613,721   417,119,940 178 8,637  
Catg J Exception Values: 12,831,397   12,020,951      
Catg D1 Exception Values: 16,315,984   17,294,901      
Catg G1 Exception Values: 20,671,883   19,952,569      
Total Test Values (4): 429,432,985   466,388,361      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 23,319,418

Confidence Interval Values (5)

Local Test Value: 429,432,985 (Outside Confidence Interval)
State Lower Limit: 443,068,943 (State Test Value minus Margin of Error Percent)
State Upper Limit: 489,707,779 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 457,633,238 (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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