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2007 Confidence Interval Detail
165/Midland
165-901/Midland ISD

Category Summary

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

Stratum
Variance
A 944,921,310 0.9628 981,430,526 29 12,191 .020916650
A 944,310,589 0.9522 991,714,544 36 6,906 .008123154
A 944,306,975 0.9640 979,571,551 56 4,684 .004719244
A 944,361,177 0.9577 986,072,024 43 2,516 .004712867
F1 242,423,924 1.0055 241,097,886 36 1,572 .128312730
F1 241,901,871 0.9283 260,585,878 23 333 .121242895
F1 245,144,870 0.7488 327,383,640 8 100 .063550038
F1 239,062,545 0.8781 272,249,795 7 28 .039823273
G1 439,020,259 0.9932 442,026,036 7 496 .005471295
G1 440,604,969 0.9891 445,460,488 7 134 .012704184
G1 451,679,631 1.0438 432,726,222 6 35 .003783653
G1 418,248,841 0.9781 427,613,578 3 5 .003955743
L1 170,930,814 0.9877 173,059,445 7 1,918 .031469386
L1 170,783,863 1.0254 166,553,406 7 295 .002663125
L1 173,982,337 1.0028 173,496,547 6 79 .000730295
L1 167,571,686 1.0327 162,265,601 5 16 .001279715
Random Totals: 7,179,255,661   7,463,307,167 286 31,308  
Catg D1 Exception Values: 9,537,350   14,130,751      
Total Test Values (4): 7,188,793,011   7,477,437,918      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 373,871,896

Confidence Interval Values (5)

State Lower Limit: 7,103,566,022 (State Test Value minus Margin of Error Percent)
Local Test Value: 7,188,793,011 (Within Confidence Interval)
State Upper Limit: 7,851,309,814 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 8,048,998,717 (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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