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091/Grayson
2018 Confidence Interval Detail
091/Grayson
091-902/Collinsville ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 20,862,969 | 1.0012 | 20,837,963 | 9 | 254 | .004952331 |
| A | 20,154,963 | 0.9903 | 20,352,381 | 14 | 160 | .004266287 |
| A | 33,312,595 | 0.9937 | 33,523,795 | 19 | 200 | .004925327 |
| A | 36,207,982 | 0.9213 | 39,300,968 | 9 | 136 | .010770738 |
| E | 60,880,670 | 0.9548 | 63,762,746 | 10 | 442 | .013226327 |
| Random Totals: | 171,419,179 | 177,777,853 | 61 | 1,192 | ||
| Catg J Exception Values: | 7,666,349 | 8,610,706 | ||||
| Catg D1 Exception Values: | 3,030,845 | 2,288,016 | ||||
| Total Test Values (4): | 182,116,373 | 188,676,575 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 9,433,828 |
Confidence Interval Values (5)
| State Lower Limit: | 179,242,747 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 182,116,373 | (Within Confidence Interval) |
| State Upper Limit: | 198,110,403 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 187,537,048 | (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