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2007 Confidence Interval Detail
170/Montgomery
170-902/Conroe ISD

Category Summary

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

Stratum
Variance
A 2,790,299,217 0.9489 2,940,561,932 41 22,575 .007321769
A 2,790,285,138 0.9332 2,990,018,365 45 14,069 .010578337
A 2,790,002,793 0.9595 2,907,767,372 40 8,872 .005613187
A 2,790,039,324 0.9583 2,911,446,649 38 4,405 .003379786
B 119,190,827 1.0030 118,834,324 6 30 .017034964
B 127,723,301 1.0404 122,763,650 6 17 .002299179
B 118,258,217 0.9613 123,019,054 5 10 .006411262
B 111,210,302 0.9917 112,141,073 4 6 .005328741
C 154,101,122 0.9489 162,399,749 15 6,376 .010008974
C 153,014,996 0.9749 156,954,555 27 2,426 .010051791
C 153,473,672 0.9580 160,202,163 15 698 .026173264
C 153,509,850 0.9491 161,742,546 9 95 .004638094
F1 589,289,460 0.9579 615,188,913 8 1,033 .052930221
F1 593,890,966 0.8295 715,962,587 8 223 .191318763
F1 595,699,943 1.0163 586,145,767 6 73 .002276827
F1 578,093,520 1.0265 563,169,528 6 18 .009146535
L1 323,102,030 0.9023 358,087,144 8 2,338 .021603702
L1 323,873,381 0.9404 344,399,597 8 328 .010889945
L1 329,810,548 0.9797 336,644,430 7 70 .004596467
L1 315,287,245 0.9961 316,521,680 5 9 .000557844
Random Totals: 15,900,155,852   16,703,971,078 307 63,671  
Catg D1 Exception Values: 51,012,060   50,356,741      
Total Test Values (4): 15,951,167,912   16,754,327,819      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 837,716,391

Confidence Interval Values (5)

State Lower Limit: 15,916,611,428 (State Test Value minus Margin of Error Percent)
Local Test Value: 15,951,167,912 (Within Confidence Interval)
State Upper Limit: 17,592,044,210 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 16,373,080,274 (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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