Intro to Stata – Quiz 1

Quiz Question Explanations

Question 1

There are various ways to view the number of variables in a dataset. One way is to count them in the Variables window. A quicker way is to run the “describe, short” command.

Question 2

You can run the ‘describe samp_weight’ command to view the variable type. The correct answer is a ‘float’ variable, which is one type of numeric variable. There are other types of numeric variables, including byte, int, long, and double. These numeric types differ in how many significant digits can be stored in the variable. String variables are a type of variable that can include numeric and non-numeric values.

Question 3

This information is contained in the variable label for the treatment variable, which can be viewed by running the command ‘describe treatment’.

Question 4

This information is contained in the variable label for the total_bl variable, which can be viewed by running the command ‘describe total_bl’. You could also find this out by tabulating the total_bl variable (‘tabulate total_bl’), which will show the different values that total_bl takes on in the dataset.