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This post is following of the above post. I will do panel data regression analysis in this post. I refert to Using R, Python and Julia for Introductory Econometrics (urfie.net)
First, I load 'plm' package.
Then, I convert df_subset data frame object to panel data frame object.
I will do "First Differenced Estimator". So, I make differenced variables.
All light, let's use lm() function for estimating regression model.
I use summary() function to see the result.
diff_per_capita_gdp is not statistically significant.
There is direct way for First Differenced Estimator with plm() function. Let's do it.
I needn't to calculate differenced value with plm() function with model = "fd".
Let's see the result.
The result is the same as mod_fd's result.
That's it! Thank you!
To read this series from the first post,
