Read the Excel file FEV1.xls into SPSS. Label the variables (see the key table above) and
add value labels where necessary. Alter the number of decimal places displayed to suit
each of the variables. Check that all the variables are set up as the appropriate type
(measure), i.e. Scale, Nominal or Ordinal. Save the file as an SPSS file called FEV1.sav. Use
this file for all subsequent analyses.