Timeline for Maximum minus average? [closed]
Current License: CC BY-SA 3.0
20 events
| when toggle format | what | by | license | comment | |
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| Aug 2, 2023 at 6:20 | history | closed |
mkt utobi User1865345 |
Needs details or clarity | |
| Aug 2, 2023 at 5:47 | review | Close votes | |||
| Aug 2, 2023 at 6:20 | |||||
| Aug 2, 2023 at 4:56 | answer | added | gurnard | timeline score: 0 | |
| Mar 27, 2020 at 1:25 | review | Close votes | |||
| Mar 31, 2020 at 3:05 | |||||
| Mar 27, 2020 at 1:08 | history | edited | kjetil b halvorsen♦ |
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| Mar 27, 2020 at 1:01 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Feb 15, 2020 at 14:01 | answer | added | Vic Colborn | timeline score: 1 | |
| Oct 7, 2014 at 14:12 | comment | added | EngrStudent | In coplanarity, maximum is key. When the (stunningly) infrequent defect occurs, it is often such that 1 to 10 of 1200 solderballs that have some coplanarity-related defect. I like to think of this as a "Tiffany defect" - like the scene in "Men In Black". In the case of such a defect, you are looking for the thing that is different from the relative normal. | |
| Oct 6, 2014 at 22:25 | comment | added | Glen_b | Is the maximum a particularly meaningful quantity in your precise context? | |
| Oct 6, 2014 at 19:36 | comment | added | EngrStudent | Purpose is key. A metric like that exists in JEDEC for determining whether a solderballs coplanarity is an outlier. The three sub-members of the (infinite) family of coplanarity outlier measures are LMS (maximum tail-to-mean distance) and Global (range). Though they look alike they are fundamentally different creatures and will have sensitivity onset at different coplanarity outlier values. | |
| Oct 6, 2014 at 19:28 | comment | added | whuber♦ | @EngrStudent ... but don't forget that the two statistics will be (positively) correlated, thereby reducing the estimation error of their difference. mlam13, these comments already establish that what the code is doing is unconventional. It's therefore unlikely your question can be answered without more (precise and quantitative) details about its purpose. | |
| Oct 6, 2014 at 19:21 | comment | added | EngrStudent | This is an estimation of the length of one of the two tails of a distribution. The error in the estimate is going to be the variation associated with estimation of the mean plus the variation associated with the estimation of the right (upper) tail. | |
| Oct 6, 2014 at 18:35 | comment | added | mlam13 | Oh sure, I can provide that - it's data sets of voltages. These voltages are compared to another data set of voltages which should result in similar results by comparing the result of (Max - Avg). But what I was looking for was there a general statistical meaning to subtracting the maximum from the average, which it appears there isn't from your comments. | |
| Oct 6, 2014 at 18:04 | comment | added | Nick Cox | @Alecos and I appear to be making the same simple points. | |
| Oct 6, 2014 at 18:02 | comment | added | Nick Cox | What kind of data is it applied to? Sales, viscosity of rubber, weight of rats, file downloads.... We don't know what field you are in unless you tell us. Your workplace situation is beyond the scope of this forum but my last question stands.... | |
| Oct 6, 2014 at 18:02 | comment | added | Alecos Papadopoulos | Maximum minus average is too general to be tied to a specific statistical procedure. So you have to think about the data on which it is applied. What the average means here? Does it have any meaningful business interpretation? The maximum? Does the distance between them may mean something business wise? Is this distance used somehow down the road on this legacy code? | |
| Oct 6, 2014 at 17:57 | comment | added | mlam13 | What other information would be useful? The individuals who worked on the code no longer work at my company, so there isn't anyone to ask. That's why I'm trying to evaluate if this calculation means anything. | |
| Oct 6, 2014 at 17:44 | comment | added | Nick Cox | You can supply precisely no context? You should try asking upstream of those who provided the code. Otherwise replies are likely to be disappointing: maximum - average is just that. It doesn't seem to arise often for intrinsically statistical reasons. It could be one of several ways of measuring how good (or how bad) a maximum is in relative terms. (If no one knows why this is being used, what is the point of calculating it?) | |
| Oct 6, 2014 at 17:39 | review | First posts | |||
| Oct 6, 2014 at 17:40 | |||||
| Oct 6, 2014 at 17:34 | history | asked | mlam13 | CC BY-SA 3.0 |