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199/Rockwall
2018 Confidence Interval Detail
199/Rockwall
199-901/Rockwall ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 1,454,478,495 | 0.9393 | 1,548,470,664 | 198 | 7,019 | .009641752 |
| A | 1,873,376,749 | 0.9822 | 1,907,327,173 | 199 | 6,766 | .005512169 |
| A | 1,915,988,424 | 0.9890 | 1,937,298,710 | 200 | 5,182 | .006630260 |
| A | 2,118,394,837 | 0.9724 | 2,178,522,045 | 200 | 3,475 | .013828352 |
| C1 | 47,853,423 | 0.8016 | 59,697,384 | 28 | 783 | .038305332 |
| C1 | 53,044,005 | 0.9629 | 55,087,761 | 23 | 404 | .026842556 |
| C1 | 64,989,932 | 0.9904 | 65,619,883 | 9 | 150 | .016521863 |
| C1 | 71,013,035 | 0.9933 | 71,492,032 | 8 | 42 | .040992154 |
| E | 322,957,371 | 0.9140 | 353,345,045 | 22 | 931 | .032072353 |
| F1 | 320,207,645 | 0.7854 | 407,700,083 | 10 | 368 | .123761107 |
| F1 | 304,624,643 | 0.9673 | 314,922,612 | 9 | 122 | .035498876 |
| F1 | 308,580,603 | 0.8936 | 345,322,967 | 8 | 49 | .012898145 |
| F1 | 389,911,260 | 0.8676 | 449,413,624 | 6 | 17 | .017937372 |
| L1 | 87,539,938 | 1.1223 | 78,000,479 | 12 | 627 | .024233029 |
| L1 | 93,293,560 | 1.0046 | 92,866,375 | 11 | 131 | .002234499 |
| L1 | 92,342,280 | 1.0913 | 84,616,769 | 8 | 27 | .008451383 |
| L1 | 110,573,550 | 0.8773 | 126,038,470 | 4 | 7 | .084366993 |
| Random Totals: | 9,629,169,750 | 10,075,742,076 | 955 | 26,100 | ||
| Catg D1 Exception Values: | 1,867,130 | 1,486,892 | ||||
| Total Test Values (4): | 9,631,036,880 | 10,077,228,968 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 503,861,448 |
Confidence Interval Values (5)
| State Lower Limit: | 9,573,367,520 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 9,631,036,880 | (Within Confidence Interval) |
| State Upper Limit: | 10,581,090,416 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 9,438,404,438 | (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, 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
(6) Includes local value of unstudied property categories and sub-categories