Error With Contribute 3.1
a particular process step, this variance is typically not just a result of the current step, but rather is an accumulation of variation from previous steps and from measurement error. Therefore, an important question that we need to answer in PPC is how the variation from the different sources accumulates. This will allow us to partition the total variation and assign the parts to the various sources. Then we can attack the sources that contribute the most. How do I partition the error? Usually we can model the contribution of the various sources of error to the total error through a simple linear relationship. If we have a simple linear relationship between two variables, say, \( y = \mu + \alpha y_{1} + \beta y_{2} + \epsilon \) then the variance associated with, y, is given by \( \mbox{Var}(y) = \alpha^{2}\mbox{Var}(y_{1}) + \beta^{2}\mbox{Var}(y_{2}) + 2 \alpha \beta \mbox{Cov}(y_{1},y_{2}) \) If the variables are not correlated, then there is no covariance and the last term in the above equation drops off. A good example of this is the case in which we have both process error and measurement error. Since these are usually independent of each other, the total observed variance is just the sum of the variances for process and measurement. Remember to never add standard deviations, we must add variances. How do I calculate the individual components? Of course, we rarely have the individual components of variation and wish to know the total variation. Usually, we have an estimate of the overall variance and wish to break that variance down into its individual components. This is known as components of variance estimation and is dealt with in detail in the analysis of variance page later in this chapter.
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behaviour of Contribute 3.1 (running in XP pro SP2). When I update my web pages, after 'Publish' contribute shows me the old version of the page, not the renewed page. The changes *are* going http://www.verycomputer.com/336_bae49e5fee17bf31_1.htm through to the web - when I view the web page in my https://www.lhup.edu/~dsimanek/scenario/errorman/propagat.htm FF browser, all is well. Its just that the viewer in Contribute still shows me the old page view. Exiting and re-starting Contribute has no effect. However, I have noticed that 24 hrs or so later, everything is back to normal, i.e. I get the correct view back. I have *no* idea what error with is causing this. (I have recently installed an extensive HOSTS file recently, and I am wondering if I am unknowingly blocking some macromedia 'tracker' site or whether this could be a problem on the server side?) Any pointers? Top 1. Re. Strange DB Error Hi All, I'm still getting the following error message on one of my pages, and I'm hoping someone might have error with contribute an idea why! Microsoft OLE DB Provider for ODBC Drivers error '80004005' [Microsoft][ODBC Microsoft Access Driver] Unrecognized database format 'D:\INetPub\WWWRoot\nost\corfs1a\databases\nost_tracking.mdb'. /corfs1a/welcome_back.asp, line 85 This is a page that was working before I changed the location of the site on my ISP. I have changed the DSN and the same page retrieves info from the db before line 85 is executed so I don't get the 'unrecognized database' error! It's also not one I've seen before so I'm a bit stuck. I have replaced the db (an Access db by the way) and Connection file just in case but no luck. Any ideas anyone? Regards, Jonathan 2. Storing HTML in database - a good idea? 3. Fresh ideas, fresh site. Check it out! 4. loadMovie using a string from an array. 5. fresh page 6. Extension Manager 1.5 Now Available for Download on the Macromedia Exchange! 7. Error after fresh install! 8. Captivate Tracking in Authorware 9. CFMX Fresh Linux Install, Admin error! 10. Search page w/checkboxes... strange error? 11. Strange error in action page 1 post • Page:1 of 1 All times are UTC Board index Spam Report
"change" in the value of that quantity. Results are is obtained by mathematical operations on the data, and small changes in any data quantity can affect the value of a result. We say that "errors in the data propagate through the calculations to produce error in the result." 3.2 MAXIMUM ERROR We first consider how data errors propagate through calculations to affect error limits (or maximum error) of results. It's easiest to first consider determinate errors, which have explicit sign. This leads to useful rules for error propagation. Then we'll modify and extend the rules to other error measures and also to indeterminate errors. The underlying mathematics is that of "finite differences," an algebra for dealing with numbers which have relatively small variations imposed upon them. The finite differences we are interested in are variations from "true values" caused by experimental errors. Consider a result, R, calculated from the sum of two data quantities A and B. For this discussion we'll use ΔA and ΔB to represent the errors in A and B respectively. The data quantities are written to show the errors explicitly: [3-1] A + ΔA and B + ΔB We allow the possibility that ΔA and ΔB may be either positive or negative, the signs being "in" the symbols "ΔA" and "ΔB." The result of adding A and B is expressed by the equation: R = A + B. When errors are explicitly included, it is written: (A + ΔA) + (B + ΔB) = (A + B) + (Δa + δb) So the result, with its error ΔR explicitly shown in the form R + ΔR, is: R + ΔR = (A + B) + (Δa + Δb) [3-2] The error in R is: ΔR = ΔA + ΔB. We conclude that the error in the sum of two quantities is the sum of the errors in those quantities. You can easily work out the case where the result is calculated from the difference of two quantities. In that case the erro