5. You should now have your data in Stata. It can be extremely helpful to save your data at this point as a Stata data set. (Remember it is only an Excel file being viewed within Stata at this point.) To save the data in memory as a Stata data set use the command save or use the dropdown File menu. Save this data set as lastname_firstname_ps1 (using your first and last name of course). Make sure this command is pasted onto your do-file and add , replace to the end of save command so that your do-file runs successfully again later. into your do-file. This also allows you to use the faster use command later rather than the import command when you later want to load this same data set into Stata. You can now also simply click the Stata file on your computer and it will automatically open in Stata. (Note that the first time you try this, you may need to tell your computer what to “open with”.) • Notice that the file type by default is .dta (this is the file extension for Stata-formatted data). • Also notice that the first time you do this, it will show as a “result” that “C:/Users/StaceyGelsheimer/BU/EC203/Stata/Assignment1/Gelsheimer_Stacey_ps1” not found. This is because you have said replace if it exists so that you can run your do-file again. You do not need to be alarmed by this result, but the command should run successfully without error (no red result).
6. Notice the Properties window inside the Stata interface. Use comments in your do-file to answer the following:
a. How many variables are there in this data set?
b. How many observations are there in this data set?
7. Now browse your data using the command browse or using the Browse button above the results window (the one that has a magnifying glass looking at a spreadsheet). Answer the following questions using comments in your do-file:
a. What type of data set is this? (Cross-sectional, Time Series, Panel or Pooled Cross-sectional)
b. How do you know? ***Note on the variables: the labels that come in when you import the data are the original column headers in the Excel file. Stata then creates variable names that have no spaces from the first set of characters. When a variable label says “[Total pts: up to 67 Percentage]” it doesn’t mean that the max score was 67%. Instead, it actually means that the assignment was worth 67 points but that the values showing are the percent correct rather than the number of points earned. (So “50” would mean 50% of the 67 points were earned.) This is just how Blackboard exports grades. If the variable label says “[Total pts: 55 Score]” then the values for each observation represent the score earned and “50” would mean 50 points (out of 55) were earned. I wanted to point this out to help you avoid confusion when interpreting the variables =)
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