taxes Property Tax Assistance

2021 Confidence Interval Detail

Shelby County
210-901/Center ISD

Category Summary

(1)
Category 		(1)
Local
Value 		(1)
Stratum
Ratio 		(1)
State
Value 		(2)
Sample
Size 		(3)
Total
Parcels
Stratum
Variance
A 40,022,515 0.6276 63,770,738 16 1,072 0.335395771
A 42,455,999 0.6719 63,187,973 18 563 0.115170422
A 41,089,252 0.8242 49,853,497 17 328 0.064891179
A 40,637,660 0.8013 50,714,664 17 188 0.075011538
E 104,832,065 0.8591 122,025,451 25 1,325 0.028619855
F1 27,923,480 0.9675 28,861,478 15 270 0.058797409
F1 28,103,280 0.8572 32,784,974 14 104 0.044821581
F1 27,628,540 0.8232 33,562,366 12 40 0.038304034
F1 27,480,570 0.9833 27,947,290 7 11 0.007369083
G1 5,970,900 0.9727 6,138,481 9 55 0.000208845
G1 6,748,171 0.9750 6,921,201 5 7 0.000395614
G1 10,715,135 0.9704 11,042,434 2 2 0.000695201
L1 9,354,580 1.0361 9,028,646 10 164 0.002181191
L1 10,112,130 1.0148 9,964,653 9 40 0.018714468
L1 8,892,720 1.0281 8,649,664 7 15 0.005256979
L1 11,761,810 1.0206 11,524,407 4 7 0.006155660
Random Totals: 443,728,807 535,977,917 187 4,191
CATG D1 EXCEPTION VALUES: 19,979,987 18,212,156
CATG G1 EXCEPTION VALUES: 12,475,500 12,807,708
CATG J EXCEPTION VALUES: 3,722,960 4,049,015
Total Test Values 479,907,254 571,046,796

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 28,552,340

Confidence Interval Values(5)

Local Test Value: 479,907,254 OUTSIDE CONFIDENCE INTERVAL
State Lower Limit: 542,494,456 (State Test Value minus Margin of Error Percent)
State Upper Limit: 599,599,136 (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