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Plotting Confidence Band on plotted regression line.

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Ugur Sahin
Ugur Sahin 2021-6-8
编辑： Jonas 2021-6-8
Hi guys, I have stacked on my homework question step ; Step is d)On a new figure, plot scatter diagram fitted curve. Compute and plot 95% confidence band in blue color. Compute and plot 99.9% confidence band in red color. I am trying to add 95% (Blue) and 99.9%(Red) Confidence Bands to my plot which have regression line. Can anyone help me ? My data set consist of 20 y value that corresponds their x values and I generate regression line which refers these values.
I need your help immeadiately :/

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Jonas
Jonas 2021-6-8
编辑：Jonas 2021-6-8
you should be able to solve your problem using polyfit and polyval function, this example of the polyval function should be pretty everything you may want to know

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