Import the three datasets provided in the .txt format. They provide data on states' GDP and population sizes and on their political regime (liberal democracy). Merge them by the state key. Have you managed to import them? Have you managed to merge them?

Think of an example of a policy problem from your field where it would be handy to represent the data (the variable of your interest) with the use of a cumulative percentage distribution. You can take the inspiration from the examples provided in the book. Try not to use more than 100 words. Note that this question is not graded, its purpose is to help you formulate your take-home message from the reading.

Match the key terms related to frequency distributions.

Import into your Excel the txt data file as well as the csv data file.

Have you managed to succesfully install R and RStudio on your computer?

Import into RStudio the file txt, csv and dta files provided. Have you managed to successfully import the data into RStudio?

Have you managed to install (or have you already had) MS Excel on your computer? And have you activated the Analysis ToolPak Add-in?

Match the levels of measurement with the operations that are permissible on them.

The reliability of a measure is threatened if the measure is imprecise.

Interval and ratio level variables can be meaningfully recoded, if needed, into ordinal level variables.