calculate upper and lower confidence interval values

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Jules Ray 2013 年 4 月 1 日

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https://jp.mathworks.com/matlabcentral/answers/69403-calculate-upper-and-lower-confidence-interval-values

Hey dudes...

i have a question about to create confidence intervals from a number of points.

i have a table named "sea", contains 2 rows the first one is the time and the second one is the elevation

sea=

-45
-40
-30
-25
-10
0
-30
-65
-40
-55
-40

what i need is to calculate the upper and lower confidential intervals (99%, 95%, 90% and 60% of confidence), and then plot this intervals using this function.

http://www.mathworks.com/matlabcentral/fileexchange/13103-plot-confidence-intervals

thanxs in advance for any idea

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Tom Lane 2013 年 4 月 2 日

First you should think "confidence intervals for what?" I assume you will treat time as fixed. Are you fitting a model of elevation over time, and you want confidence intervals for parameters of that model? Or are the times just different observations, and you want to fit a probability distribution to the elevation values and compute confidence intervals for parameters of that distribution? Or ...?

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