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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 0.9382 453,677,145 30 4,835 .036461217
A 425,352,500 0.9237 460,487,712 35 2,454 .010584214
A 425,282,768 0.9175 463,523,453 34 1,573 .026282038
A 425,287,239 0.9256 459,471,952 28 969 .010958726
C 43,210,111 0.9727 44,422,855 8 3,787 .028375605
C 43,088,323 0.9374 45,965,781 7 1,584 .004103864
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 0.9533 172,509,156 12 2,297 .051286277
Random Totals: 2,038,562,649   2,186,496,515 180 18,599  
Catg D1 Exception Values: 20,701,056   20,309,382      
Total Test Values (4): 2,059,263,705   2,206,805,897      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 110,340,295

Confidence Interval Values (5)

Local Test Value: 2,059,263,705 (Outside Confidence Interval)
State Lower Limit: 2,096,465,602 (State Test Value minus Margin of Error Percent)
State Upper Limit: 2,317,146,192 (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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