SAS Chapter 9 Producing Descriptive Statistics

10 Questions | Total Attempts: 306

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SAS Chapter 9 Producing Descriptive Statistics

Practice for the SAS basic certification exam.


Questions and Answers
  • 1. 
    The default statistics produced by the MEANS procedure are n-count, mean, minimum, maximum, and ...
    • A. 

      Median

    • B. 

      Range

    • C. 

      Standard deviation

    • D. 

      Standard error of the mean

  • 2. 
    Which statement will limit a PROC MEANS analysis to the variables Boarded, Transfer, and Deplane?
    • A. 

      By boarded transfer deplane;

    • B. 

      Class boarded transfer deplane;

    • C. 

      Output boarded transfer deplane;

    • D. 

      Var boarded transfer deplane;

  • 3. 
    The data set Survey.Health includes the following variables.  Which is a poor candidate for PROC MEANS analysis?
    • A. 

      IDnum

    • B. 

      Age

    • C. 

      Height

    • D. 

      Weight

  • 4. 
    Which of the following statements is true regarding BY group processing?  
    • A. 

      BY variables must be either indexed or sorted.

    • B. 

      Summary statistics are computed for BY variables.

    • C. 

      BY group processing is preferred when you are categorizing data that contains few variables.

    • D. 

      BY group processing overwrites your data set with newly grouped observations.

  • 5. 
    Which group processing statement produced the PROC MEANS output shown below?
    • A. 

      Class sex survive;

    • B. 

      Class survive sex;

    • C. 

      By sex survive;

    • D. 

      By survive sex;

  • 6. 
    Which program can be used to create the following output?
    • A. 

      Proc means data=clinic.diabetes;     var age height weight;     class sex;     output out=work.sum_gender        mean=AvgAge AvgHeight AvgWeight; run;

    • B. 

      Proc summary data=clinic.diabetes print;    var age height weight; class sex;    output out=work.sum_gender       mean=AvgAge AvgHeight AvgWeight; run;

    • C. 

      Proc means data=clinic.diabetes noprint;    var age height weight;    class sex;    output out=work.sum_gender       mean=AvgAge AvgHeight AvgWeight; run;

    • D. 

      Both a and b.

  • 7. 
    By default, PROC FREQ creates a table of frequencies and percentages for which data set variables?
    • A. 

      Character variables

    • B. 

      Numeric variables

    • C. 

      Both character and numeric variables

    • D. 

      None: variables must always be specified

  • 8. 
    Frequency distributions work best with variables that contain
    • A. 

      Continuous values.

    • B. 

      Numeric values.

    • C. 

      Categorical values.

    • D. 

      Unique values.

  • 9. 
    Which PROC FREQ step produced this two-way table?
    • A. 

      Proc freq data=clinic.diabetes;    tables height weight;    format height htfmt. weight wtfmt.; run;

    • B. 

      Proc freq data-clinic.diabetes;    tables weight height;    format weight wtfmt. height htfmt.; run;

    • C. 

      Proc freq data=clinic.diabetes;    tables height*weight;    format height htfmt. weight wtfmt.; run;

    • D. 

      Proc freq data=clinic.diabetes;    tables weight*height;    format weight wtfmt. height htfmt.; run;

  • 10. 
    Which PROC FREQ step produced this table?
    • A. 

      Proc freq data=clinic.diabetes;    tables sex weight / list;    format weight wtfmt.; run;

    • B. 

      Proc freq data=clinic.diabetes;    tables sex*weight / nocol;    format weight wtfmt.; run;

    • C. 

      Proc freq data=clinic.diabetes;    tables sex weight / norow nocol;    format weight wtfmt.; run;

    • D. 

      Proc freq data=clinic.diabetes;    tables sex*weight / nofreq norow nocol;    format weight wtfmt.; run;

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