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2006 Confidence Interval Detail
170/Montgomery
170-906/Magnolia ISD

Category Summary

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

Stratum
Variance
A 425,639,897 0.9080 468,766,406 75 4,835 .021811447
A 425,352,500 0.9505 447,503,945 148 2,454 .009390182
A 425,282,768 0.9356 454,556,186 91 1,573 .015398264
A 425,287,239 0.9291 457,741,082 59 969 .009741351
C 43,210,111 0.9918 43,567,363 12 3,787 .025297180
C 43,088,323 1.0250 42,037,388 24 1,584 .035284893
C 43,141,810 0.9640 44,752,915 8 784 .010271499
C 43,107,023 1.0341 41,685,546 18 316 .040717999
D3 164,452,978 0.9551 172,184,041 13 2,297 .052336117
Random Totals: 2,038,562,649   2,172,794,872 448 18,599  
Catg D1 Exception Values: 20,701,056   20,309,382      
Total Test Values (4): 2,059,263,705   2,193,104,254      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 109,655,213

Confidence Interval Values (5)

Local Test Value: 2,059,263,705 (Outside Confidence Interval)
State Lower Limit: 2,083,449,041 (State Test Value minus Margin of Error Percent)
State Upper Limit: 2,302,759,467 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 2,269,428,810 (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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