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2010 Confidence Interval Detail
057/Dallas
057-905/Dallas ISD

Category Summary

(1)
Category
(1)
Local
Value
(1)
Stratum
Ratio
(1)
State
Value
(2)
Sample
Size
(3)
Total
Parcels

Stratum
Variance
A 9,260,061,690 0.9852 9,399,169,397 100 103,441 .008421333
A 9,945,562,900 0.9826 10,121,680,134 100 41,766 .004868183
A 9,655,955,270 0.9802 9,851,005,172 100 19,165 .007015447
A 9,456,776,700 0.9846 9,604,688,909 100 6,041 .003409786
B 1,717,136,710 0.9971 1,722,130,890 121 4,877 .008389760
B 1,689,461,500 1.1184 1,510,605,776 10 339 .024300828
B 1,655,330,780 0.9253 1,788,966,584 9 111 .005059307
B 1,598,420,650 0.8775 1,821,561,994 8 44 .014782227
C 603,655,910 0.9437 639,669,291 16 9,976 .035635770
C 551,403,210 0.9100 605,937,593 14 1,166 .013162464
C 591,164,850 0.8805 671,396,763 11 348 .051910080
C 464,818,340 0.9939 467,671,134 10 76 .001225288
F1 5,547,696,760 0.9674 5,734,646,227 69 6,355 .044015621
F1 5,209,490,450 0.9864 5,281,316,352 10 1,123 .004320109
F1 5,430,157,450 0.9009 6,027,480,797 11 299 .040470161
F1 4,452,682,820 0.9415 4,729,349,782 9 51 .007837663
L1 2,389,393,180 1.0236 2,334,303,615 10 8,791 .012967326
L1 2,232,112,120 1.1177 1,997,058,352 10 1,127 .019160482
L1 2,253,245,820 1.0741 2,097,798,920 10 304 .003817957
L1 2,145,294,140 1.0060 2,132,499,145 9 71 .020378128
Random Totals: 76,849,821,250   78,538,936,827 737 205,471  
Catg J Exception Values: 1,098,936,575   1,304,746,712      
Catg D1 Exception Values: 3,564,134   3,803,844      
Total Test Values (4): 77,952,321,959   79,847,487,383      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 3,992,374,369

Confidence Interval Values (5)

State Lower Limit: 75,855,113,014 (State Test Value minus Margin of Error Percent)
Local Test Value: 77,952,321,959 (Within Confidence Interval)
State Upper Limit: 83,839,861,752 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 70,895,740,583 (See ISD Summary Worksheet)

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, D3, F1, G1, G2, or L1 marked as exception properties
(5) Unstudied categories and sub-categories were not included in the Confidence Interval Values
(6) Includes local value of unstudied property categories and sub-categories

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