taxes Property Tax Assistance

2020 Confidence Interval Detail

Brazoria County
020-907/Columbia-Brazoria ISD

Category Summary

(1)
Category 		(1)
Local
Value 		(1)
Stratum
Ratio 		(1)
State
Value 		(2)
Sample
Size 		(3)
Total
Parcels
Stratum
Variance
A 192,136,455 0.9400 204,400,484 32 2,046 0.029279788
A 231,070,632 0.9722 237,678,083 56 1,506 0.016235407
A 245,433,478 0.9914 247,562,516 58 1,172 0.007828048
A 386,336,444 0.9881 390,989,216 76 1,213 0.008255250
E 148,053,530 0.9678 152,979,469 19 1,396 0.022188815
F1 24,636,334 0.7429 33,162,383 11 193 0.054052775
F1 24,786,301 0.8286 29,913,470 9 65 0.051442969
F1 28,627,691 0.7478 38,282,550 9 30 0.138443974
F1 18,266,080 0.7854 23,257,041 5 7 0.012415111
Random Totals: 1,299,346,945 1,358,225,212 275 7,628
CATG D1 EXCEPTION VALUES: 8,250,090 6,376,961
CATG J EXCEPTION VALUES: 39,457,360 48,305,932
Total Test Values 1,347,054,395 1,412,908,105

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 70,645,405

Confidence Interval Values(5)

Local Test Value: 1,347,054,395 WITHIN CONFIDENCE INTERVAL
State Lower Limit: 1,342,262,700 (State Test Value minus Margin of Error Percent)
State Upper Limit: 1,483,553,510 (State Test Value plus Margin of Error Percent)

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, D2, E, F1, G1, G2, or L1 marked as exception properties
(5) Unstudied categories and sub-categories were not included in the Confidence Interval Values