taxes Property Tax Assistance

2020 Confidence Interval Detail

Martin County
156-905/Grady ISD

Category Summary

(1)
Category 		(1)
Local
Value 		(1)
Stratum
Ratio 		(1)
State
Value 		(2)
Sample
Size 		(3)
Total
Parcels
Stratum
Variance
G1 959,614,188 1.0573 907,608,236 10 192 0.005599287
G1 951,215,778 0.9946 956,380,231 9 66 0.001218229
G1 1,016,129,970 1.0104 1,005,670,992 8 26 0.001016788
G1 877,569,940 1.0110 868,021,701 4 5 0.000708832
Random Totals: 3,804,529,876 3,737,681,160 31 289
CATG D1 EXCEPTION VALUES: 6,158,330 13,315,236
CATG J EXCEPTION VALUES: 29,613,480 31,406,427
Total Test Values 3,840,301,686 3,782,402,823

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 189,120,141

Confidence Interval Values(5)

Local Test Value: 3,840,301,686 WITHIN CONFIDENCE INTERVAL
State Lower Limit: 3,593,282,682 (State Test Value minus Margin of Error Percent)
State Upper Limit: 3,971,522,964 (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