I have many data regarding two independent variables. I asking for how to get a fitting curve to predict the attitude of the two variables. I wonder if it will be beneficial to use multi regression modeling. I checked linear regression but it was not valid.
A scatter plot between the independent variable and the dependent variable may help to check whether the relationship is linear. If the pattern is not linear (or maybe no relations between them!), the multi linear regression should be modified.
Yes, it's multiple (linear) regression:
http://mezeylab.cb.bscb.cornell.edu/labmembers/documents/supplement%205%20-%20multiple%20regression.pdf
https://online.stat.psu.edu/stat501/lesson/5
Hi, Ehab
Here is a free, short, simple article answering your question:
- https://odajournal.com/2019/01/19/when-to-evaluate-a-nonlinear-model/
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