Exam 5: Creating New Variables

A researcher uses the Compute procedure to create two new variables. The two new variables are called NEW1 and NEW2. The first case in the data set has a value of 10 on VARA and 2 on VARB. What values will that first case have on the two new variables? A) if NEW1 = (VARA - 8) / VARB then for the 1^st case NEW1 = _____ B) if NEW2 = VARA - 8 / VARB then for the 1^st case NEW2 = _____

A researcher is planning to create an index consisting of five variables: varA, varB, varC, varD, and varE. Based on the following output from the Reliability Analysis procedure, what would you recommend?    

When would you use Select Cases and when would you use Split File?

How can missing data be handled when constructing an index?

What are the two most common reasons for recoding a variable?

A variable has a mean of 100 and a standard deviation of 10. Calculate the Z-scores for the first two cases and the raw scores for the last two cases.  

You are computing a new variable called CRIMEALL. It is the average of four variables already in your data set: CRIMESA, CRIMESB, CRIMESC, and CRIMESD. Write the numeric expression (formula) for a compute command that averages these four variables but only if all four of the CRIME variables being averaged have valid values. _____________________________________