2008 Confidence Interval Detail
057/Dallas
057-919/Sunnyvale ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 88,129,570 | 1.0113 | 87,144,833 | 8 | 446 | .001392410 |
| A | 93,940,000 | 0.9650 | 97,347,150 | 14 | 365 | .003983780 |
| A | 125,562,610 | 0.9833 | 127,695,118 | 18 | 376 | .002261016 |
| A | 110,422,810 | 0.9913 | 111,391,920 | 7 | 226 | .000970690 |
| C | 4,936,970 | 0.9555 | 5,166,897 | 7 | 123 | .002763790 |
| C | 11,406,080 | 1.0193 | 11,190,111 | 7 | 186 | .001348109 |
| C | 13,652,060 | 1.0452 | 13,061,672 | 6 | 125 | .002582725 |
| C | 13,840,660 | 1.0627 | 13,024,052 | 5 | 23 | .003388427 |
| F1 | 12,360,300 | 1.0035 | 12,317,190 | 5 | 37 | .039400266 |
| F1 | 10,561,380 | 0.9109 | 11,594,445 | 6 | 15 | .028326465 |
| F1 | 11,068,980 | 0.8771 | 12,619,975 | 4 | 8 | .012767891 |
| L1 | 19,007,520 | 1.0109 | 18,802,572 | 7 | 31 | .000976453 |
| Random Totals: | 514,888,940 | 521,355,935 | 94 | 1,961 | ||
| Catg D1 Exception Values: | 622,938 | 713,104 | ||||
| Catg F1 Exception Values: | 26,085,140 | 27,584,000 | ||||
| Catg L1 Exception Values: | 78,277,440 | 77,931,542 | ||||
| Total Test Values (4): | 619,874,458 | 627,584,581 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 31,379,229 |
Confidence Interval Values (5)
| State Lower Limit: | 596,205,352 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 619,874,458 | (Within Confidence Interval) |
| State Upper Limit: | 658,963,810 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 647,876,008 | (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