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2009 Confidence Interval Detail
126/Johnson
126-908/Venus ISD

Category Summary

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

Stratum
Variance
A 36,111,615 1.0324 34,978,318 8 696 .014746215
A 35,593,363 1.0596 33,591,320 11 460 .022005795
A 43,360,983 1.0058 43,110,940 20 399 .006548875
A 34,715,406 1.0025 34,628,834 16 219 .008731919
C 5,156,960 1.0203 5,054,357 9 397 .009575297
C 3,380,496 0.8917 3,791,069 9 215 .122157729
C 4,642,860 0.9948 4,667,129 8 201 .182615188
C 2,922,546 1.0078 2,899,927 8 81 .000406089
D3 17,956,495 1.0010 17,938,556 13 536 .020657655
G1 48,169,111 1.0152 47,447,903 6 46 .010026581
G1 48,798,875 1.0372 47,048,665 7 29 .014771708
G1 47,941,026 1.0116 47,391,287 5 21 .004908751
G1 46,188,356 0.9949 46,425,124 5 13 .009660994
Random Totals: 374,938,092   368,973,429 125 3,313  
Catg J Exception Values: 13,183,452   12,841,571      
Catg D1 Exception Values: 1,585,048   2,110,797      
Total Test Values (4): 389,706,592   383,925,797      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 19,196,290

Confidence Interval Values (5)

State Lower Limit: 364,729,507 (State Test Value minus Margin of Error Percent)
Local Test Value: 389,706,592 (Within Confidence Interval)
State Upper Limit: 403,122,087 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 434,270,947 (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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