When performing anova analysis of a multiple regression model in R studio, how is the sum of square value of each explanatory variable calculated?
](https://i.sstatic.net/GOlr7.png)
I think it should be (SSE of reduced model - SSE of full model). If so, is the reduced model a model in which only each variable is removed? If not, how is it calculated? Please explain using the Agr variable as an example.
](https://i.sstatic.net/tL3Ei.png)
The SSE of the model with Agr removed was 0.5504. 0.5504 - 0.5188 = 0.0316, which is not 0.5590
The anova function in R performs a Type 1 ANOVA. If you used car::Anova(..,type=2) it could perform a Type 2 ANOVA which would behave as you expect.
So in your case, because Agr is the first term entered, the sum of squares for Agr reported by anova is the difference in the SSE between the null model Nitrogen~1 and the model with Agr alone as a predictor.
See here for more explanation https://www.r-bloggers.com/2011/03/anova-%E2%80%93-type-iiiiii-ss-explained/
- grid.arrange's relative height argument didn't works well in RMarkdown
- How apply a function to every element of a matrix?
- Polar plot in R using ggplot2
- Find total length of time in multiple values of a dataset that overlaps with a given period of time
- Faster than R's `simplify2array`?
- What is the most simple way to label a data.table frequency chart in R?
- How to show dates in a secondary x-axis while the primary x-axis is numerical?
- online compiler for r-markdown document
- Unecessarily large column widths in HTML tables published by R Quarto when the table header contains special characters
- Bootstrapping a vector of results, by group in R
- Speeding Up Monte Carlo Simulations for Weather-Dependent Claims
- Is there an R class which allows to list 2 elements but shows only the first of them by default when called?
- Convert day of week number to weekday name in R
- How do you use "<<-" (scoping assignment) in R?
- Using reactivePoll to monitor and process file changes
- How to find out which graph is most similar to another graph?
- ggplot2: rectangular background behind axis text in circular bar plot
- How to simulate button click using rvest
- CMIP6, automating by month
- Covert dummy variables to single categorical in R?
- Animated reducing bar chart with gganimate
- Create an object class matrix/array from data frame
- How to add a vector of names to `sort_by()` in base R
- Among many subfolders, find CSVs starting with a given string and within ZIPs or not, and merge them while adding their names in a new column with R
- How to add a greek letter to an axis label to a 3D plot in plotly?
- bigrquery + dplyr error when using functions and sourcing from separate R script
- Shiny App Error: /v1/applications/ 400 - Validation Error Execution halted
- Rupee Unicode replacement not working in R
- Mutate multiple variable to create multiple new variables
- How to use the Stata equivalent of a foreach loop in R with mutate()