2010 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 | 1,031,190,844 | 0.9823 | 1,049,771,805 | 64 | 7,021 | .008994890 |
| A | 997,780,988 | 0.9902 | 1,007,656,017 | 59 | 4,929 | .007456016 |
| A | 1,024,673,900 | 0.9915 | 1,033,458,296 | 68 | 3,565 | .006398861 |
| A | 984,720,314 | 0.9940 | 990,664,300 | 65 | 1,817 | .004682477 |
| D3 | 261,518,187 | 1.0251 | 255,114,805 | 15 | 2,093 | .022275442 |
| F1 | 209,667,386 | 0.8836 | 237,287,671 | 11 | 322 | .030401292 |
| F1 | 200,507,318 | 0.9531 | 210,373,852 | 9 | 96 | .039413691 |
| F1 | 243,068,755 | 0.9164 | 265,243,076 | 8 | 33 | .017897396 |
| F1 | 150,918,380 | 0.9336 | 161,652,078 | 4 | 5 | .010925517 |
| L1 | 61,064,662 | 1.2061 | 50,629,850 | 10 | 565 | .039332494 |
| L1 | 57,459,270 | 1.1171 | 51,436,102 | 9 | 107 | .018640194 |
| L1 | 57,006,611 | 1.0207 | 55,850,506 | 7 | 22 | .004537396 |
| L1 | 63,521,630 | 0.9917 | 64,053,272 | 3 | 5 | .022782659 |
| Random Totals: | 5,343,098,245 | 5,433,191,630 | 332 | 20,580 | ||
| Catg J Exception Values: | 66,103,894 | 63,164,669 | ||||
| Catg D1 Exception Values: | 2,720,640 | 2,228,086 | ||||
| Total Test Values (4): | 5,411,922,779 | 5,498,584,385 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 274,929,219 |
Confidence Interval Values (5)
| State Lower Limit: | 5,223,655,166 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 5,411,922,779 | (Within Confidence Interval) |
| State Upper Limit: | 5,773,513,604 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 5,700,635,699 | (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