taxes Property Tax Assistance

2018 Confidence Interval Detail

041/Coke
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 2,301,220 0.9904 2,323,526 9 61 0.013500346
A 3,084,320 0.9985 3,088,953 13 45 0.007345650
A 1,236,310 1.0978 1,126,171 7 13 0.003791126
A 2,344,460 1.0381 2,258,414 10 14 0.016474438
E 4,116,600 1.1043 3,727,791 18 59 0.039486355
G1 1,171,700 0.9313 1,258,134 12 17 0.134685555
Random Totals: 14,254,610 13,782,989 69 209
CATG D1 EXCEPTION VALUES: 1,363,330 1,393,359
CATG G1 EXCEPTION VALUES: 334,800 310,390
CATG J EXCEPTION VALUES: 251,890 271,239
Total Test Values(3) 16,204,630 15,757,977

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 787,899

Confidence Interval Values(5)

Local Test Value: 16,204,630 WITHIN CONFIDENCE INTERVAL
State Lower Limit: 14,970,078 (State Test Value minus Margin of Error Percent)
State Upper Limit: 16,545,876 (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