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I want to plot some confidence interval graphs in MATLAB but I don't have any idea at all how to do it. I have the data in a .xls file. Can someone give me a hint, or does anyone know commands for plotting CIs?
Started by on , 3 posts by 3 people.  
These m-files on Matlab File Exchange: plot confidence intervals confplot I'm not sure what you meant by confidence intervals graph, but this is an example of how to plot a two-sided 95% CI.
See e.g.
After a hard drive fail (lots of corrupted sectors) I reformat it, but the drive give me no confidence to use it in production. Is there a tool to stress test so I know I can use it? In which ways would you use the drive so if it fails again you don't...
Started by on , 15 posts by 15 people.  
See here: http://www.grc.com/intro.htm If you can boot from a CD or USB stick, I suggest you try GRC's SprinrRite... .
It takes quite a while, but it's worth it in the long run .
I like to run SpinRite on semi-defunct drives just to see if they're worth anything .
Let's in fact generalize to a c -confidence interval. Let the common rate parameter be a . (Note that the mean of an exponential distribution with rate parameter a is 1/a .) First find the cdf of the sum of n such i.i.d. random variables. Use that to ...
Started by on , 4 posts by 4 people.  
The inverse cdf is: Fi[p_] := InverseGammaRegularized[n, 1 - p]/a; The c-confidence interval is then ci[c.
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I wondered what people's opinions were regarding self confidence as a factor in ability as a programmer. Personally I've found it makes a surprisingly big difference to my ability to code quality software. I've found that when I've felt less confident...
Started by on , 9 posts by 9 people.  
When I only had a few items in my ... .
Quality code comes.
If one lacks the self confidence to take chances on writing code without asking for the solution, confidence does not produce quality code - quality code produces confidence.
For large n (see below for how to determine what's large enough), it's safe to treat, by the central limit theorem, the distribution of the sample mean as normal (gaussian) but I'd like a procedure that gives a confidence interval for any n . The way ...
Started by on , 7 posts by 7 people.  
A 95% confidence interval would be [mean - 1.96*stdev, mean + 1.96*stdev], assuming a normal distribution confidence interval....
Once you have the these two statistics, you can estimate a confidence interval.
Not storing any data.
Hello, I need to calculate the within and between run variances from some data as part of developing a new analytical chemistry method. I also need confidence intervals from this data using the R language I assume I need to use anova or something ? My...
Started by on , 5 posts by 5 people.  
I've found reference to caluclating confidence intervals by Burdick and Graybill ....
I've been looking at a similar problem.
I'm going to take shot at it.
", "Mean Sq"] [1] 0.8586111 This should give you enough to do confidence intervals.
I wanted to see what folks thought were the best way to help junior members gain confidence in their ability to refactor code. I find that often junior developers simply follow the existing patterns and sense an aversion to break anything due to the perceived...
Started by on , 13 posts by 13 people.  
Basically Unit Testing can give you the confidence is the best of both worlds and therefore....
The confidence level and flexibility unit tests allow are immensely valuable refactoring affected the desired program behavior.
Are still valid.
I am trying to determine what level of confidence my development team has in our automated test base (unit, integration, webtest). I would optimally like to get sensible answers to questions like: What refactorings do you expect to be covered/not covered...
Started by on , 4 posts by 4 people.  
What numbers would give them more confidence..
If they believe in the tests, they'll of confidence, and therefore somewhat emotional.
Developers run the tests? Here, confidence == 1/frequency.
I'm using some fairly straight-forward SQL code to calculate the coefficients of regression (intercept and slope) of some (x,y) data points, using least-squares. This gives me a nice best-fit line through the data. However we would like to be able to ...
Started by on , 4 posts by 4 people.  
An equation for confidence interval width as f(x) is given here under "Confidence Interval on Fitted....
On the other hand, from what I remember it may only have had stuff for the confidence interval/Courses/1997-98/101/linregin.htm .
Why you lose your confidence in your trade esa kya hota hey jis ki weja aap apni trade per confidence kho detay hien?
Started by on , 15 posts by 8 people.  
Answer Snippets (Read the full thread at fxopen):
Mostly....
Lakin immense pressure ki sorat ma ap apna confidence kho sakte ha aap apni trade per confidence kho detay hien? Yar jb position open kr li jati hy tu us k bad b hum hen k shyd hmari position wrong hy.
Nai aisa to bohat km hota ha.
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