taxes Property Tax Assistance

2020 Confidence Interval Detail

Coke County
177-903/Blackwell CISD

Category Summary

(1)
Category 		(1)
Local
Value 		(1)
Stratum
Ratio 		(1)
State
Value 		(2)
Sample
Size 		(3)
Total
Parcels
Stratum
Variance
A 2,302,070 0.9241 2,491,148 13 64 0.002167275
A 2,347,380 0.9326 2,517,028 10 36 0.000751415
A 2,170,880 0.9163 2,369,180 11 24 0.013476302
A 2,203,640 0.9424 2,338,328 8 13 0.002844942
E 4,146,490 0.9732 4,260,676 20 56 0.058985127
G1 1,275,600 0.9952 1,281,752 7 17 0.000046285
Random Totals: 14,446,060 15,258,112 69 210
CATG D1 EXCEPTION VALUES: 1,109,719 1,158,468
CATG G1 EXCEPTION VALUES: 933,460 925,665
CATG J EXCEPTION VALUES: 271,785 267,666
Total Test Values 16,761,024 17,609,911

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 880,496

Confidence Interval Values(5)

Local Test Value: 16,761,024 WITHIN CONFIDENCE INTERVAL
State Lower Limit: 16,729,415 (State Test Value minus Margin of Error Percent)
State Upper Limit: 18,490,407 (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