
regression - Why are "Linear" Models so Important? - Cross …
Sep 17, 2022 · GLMs are linear in parameters, that's why “linear”. See also Distinction between linear and nonlinear model and Why is polynomial regression considered a special case of …
Minimal number of points for a linear regression
Feb 10, 2023 · If you are doing exploratory analysis just to see if one model (say linear in a covariate) looks better than another (say a quadratic function of the covariate) less than 10 …
Why is ANOVA equivalent to linear regression? - Cross Validated
Oct 3, 2015 · ANOVA and linear regression are equivalent when the two models test against the same hypotheses and use an identical encoding. The models differ in their basic aim: ANOVA …
What happens when we introduce more variables to a linear …
Feb 22, 2020 · Adjusted R-squared value can be calculated based on the value of r-squared, the number of independent variables (predictors), total sample size. What happens when we …
Assumptions of linear models and what to do if the residuals are …
For your first question, I don't think that a linear regression model assumes that your dependent and independent variables have to be normal. However, there is an assumption about the …
regression - Why does adding more terms into a linear model …
Jan 12, 2015 · Many statistics textbooks state that adding more terms into a linear model always reduces the sum of squares and in turn increases the r-squared value. This has led to the use …
When conducting multiple regression, when should you center …
Jun 5, 2012 · This proof is only for simple linear regression. It doesn't generalize to higher dimensions, but it's pretty simple to show from the multiple linear regression formula for β^ β ^, …
Does it make sense to use a date variable in a regression?
I'm not used to using variables in the date format in R. I'm just wondering if it is possible to add a date variable as an explanatory variable in a linear regression model. If it's possible, how c...
How to check if my regression model is good - Cross Validated
13 One way to find accuracy of the logistic regression model using 'glm' is to find AUC plot. How to check the same for regression model found with continuous response variable (family = …
Simple explanation of dynamic linear models - Cross Validated
Sep 20, 2018 · Introduction Generalized Dynamic Linear Models are a powerful approach to time-series modelling, analysis and forecasting. This framework is closely related to the families of …