Linear and Quadratic Plateau Graphs in Sigmaplot

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Demonstration of how to use sigmaplot to graph linear and quadratic plateau regressions
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I would like to say simply thank you!!!

alebachewayalew
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Hello! Would you mind letting me how did you get the value of X0= -0.5*b/c?

sonighimire
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can you teach us how to find the x and y numbers using another program? if possible use R studio please

diogoturbo
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Hi professor. Thanks for the video! I tried to use your code, but all I got was a line that starts at 0 and finishes at 0 as well. My points are pretty much a quadratic plateau though. Do you know what happened? Thanks in advance!

cardmovies
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Hi professor, I have a question about the fertilizer rate, and I sent an email to you last week... Did you see that?

lynnee
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is it possible to change the more spacing range at y-ticks, for example :I would like to see (20, 50, 100, 150, 200) ? Because the y-ticks are more clumsy therefore I need more gap between each y-tick but total range is still from 20-200 (as per your example: time 5:00).

learningbydoing