taxes Property Tax Assistance

2020 Confidence Interval Detail

Grayson County
091-908/Van Alstyne ISD

Category Summary

(1)
Category 		(1)
Local
Value 		(1)
Stratum
Ratio 		(1)
State
Value 		(2)
Sample
Size 		(3)
Total
Parcels
Stratum
Variance
A 113,472,455 0.9925 114,329,929 25 749 0.013744485
A 162,693,419 0.9893 164,453,067 40 679 0.003728300
A 160,018,600 0.9919 161,325,335 25 515 0.002340420
A 169,555,148 0.9797 173,068,437 25 378 0.001462145
E 137,756,532 0.9739 141,448,334 11 516 0.008629383
F1 15,751,818 1.0186 15,464,184 9 76 0.025245628
F1 19,109,964 0.9685 19,731,506 8 32 0.002689494
F1 16,489,354 0.9521 17,318,931 6 10 0.006914617
L1 5,489,290 1.2098 4,537,353 9 53 0.052911039
L1 6,298,428 1.1198 5,624,601 7 20 0.025826244
L1 5,993,837 0.9990 5,999,837 5 8 0.000005520
L1 2,767,118 1.0161 2,723,400 1 4 0.000000000
Random Totals: 815,395,963 826,024,914 171 3,040
CATG D1 EXCEPTION VALUES: 2,745,314 1,592,706
CATG F1 EXCEPTION VALUES: 7,026,926 7,035,326
CATG L1 EXCEPTION VALUES: 35,388,538 35,388,538
Total Test Values 860,556,741 870,041,484

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 43,502,074

Confidence Interval Values(5)

Local Test Value: 860,556,741 WITHIN CONFIDENCE INTERVAL
State Lower Limit: 826,539,410 (State Test Value minus Margin of Error Percent)
State Upper Limit: 913,543,558 (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