Class_2 - The Distribution of Single Variables Two Types of...

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The Distribution of Single Variables
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Two Types of Variables Continuous variables Equal intervals of measurement Known zero-point that is meaningful Discrete variables Simply counts of attributes Generate category frequencies
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For continuous variables, Equal intervals means that the distances between any two adjacent values are identical e.g., AGE: the difference between 21 and 22 years of age is identical in years to the difference between 33 and 34 years of age Meaningful zero-point means it makes sense e.g., GPA: a GPA of 0.00 means you have completed no coursework successfully There might be fractions (i.e. 5.5 hours of studying)
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For discrete variables, All we can do is count the number of observations that fall into its various categories e.g., GENDER: we can count the number of males and females in this class. No fractions involved (i.e. there cannot be 4.3 males in the class).
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Using SAS to Produce Statistics for Single Variables libname mydata 'a:\'; libname library 'a:\';
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