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199/Rockwall
2018 Confidence Interval Detail
199/Rockwall
199-902/Royse City ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 207,583,506 | 0.8902 | 233,187,493 | 70 | 1,418 | .005450071 |
| A | 243,059,131 | 0.9557 | 254,325,762 | 69 | 1,299 | .003124563 |
| A | 303,436,351 | 0.9772 | 310,516,119 | 70 | 1,362 | .004481656 |
| A | 351,719,091 | 0.9720 | 361,850,917 | 68 | 1,074 | .005072589 |
| E | 98,232,402 | 0.9673 | 101,553,191 | 11 | 446 | .015801649 |
| F1 | 28,890,683 | 0.9212 | 31,362,009 | 9 | 93 | .067863625 |
| F1 | 25,485,261 | 0.9564 | 26,647,073 | 7 | 29 | .008811289 |
| F1 | 36,250,003 | 0.9445 | 38,380,098 | 5 | 16 | .015817699 |
| F1 | 31,137,815 | 0.8665 | 35,935,159 | 2 | 3 | .014032127 |
| Random Totals: | 1,325,794,243 | 1,393,757,821 | 311 | 5,740 | ||
| Catg D1 Exception Values: | 1,565,451 | 1,323,196 | ||||
| Total Test Values (4): | 1,327,359,694 | 1,395,081,017 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 69,754,050 |
Confidence Interval Values (5)
| State Lower Limit: | 1,325,326,967 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 1,327,359,694 | (Within Confidence Interval) |
| State Upper Limit: | 1,464,835,067 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 1,371,355,216 | (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