Quant Session 5 (part 2)

Which is NOT a way to create a new variable?

• Start from scratch gen q40a = .

• Make an exact copy gen q40a = q40

• Do the math q40a = q39a + q39b + q39c

• Change the name rename q40 q40a

What should you do when doing a recode involving three or more variables? 

• 1. List only the values of the newly created variable. 

• 2. List the values of the newly created variable and all component variables, including intermediate variables if used. 

• 3. List only the values of the component variables. 

• 4. List the values of the newly created variable but exclude intermediate variables. 

Which of the following are key steps in checking the accuracy of complex recodes using the LIST command? 

• 1. Conduct a basic LIST scan 

• 2. Select a subset of cases to check 

• 3. Select a random subsample 

• 4. Check specific ranges of recodes 

• 5. All of the above 

   

4. What are the 4 different uses of GENERATE? (choose all that apply)

 

• 1. Setting a new variable equal to an existing variable (making a copy) 

• 2. Initialize to Missing (.) - Starting from Scratch 

• 3. Setting a new variable equal to an arithmetic expression 

• 4. Merging two datasets together 

• 5. Intermediate variables: using several GENERATE strategies 

9. Say you wanted to make a variable that represents how many adults the R lives with, based on variables Q14a, Q14b, and Q14c.  Which GENERATE strategy would you use? 

• 1. Initialize to 999 then pull in with IF statements. 

• 2. Make a copy of Q14a and recode from there. 

• 3. Create copies and dummy variables to represent 1=yes, 0=no if they live with each kind of adult (Q14a, Q14b, Q14c), then add up the Yeses. 

• 4. Recode the original Q14 Variable