News
Some classes of variables can be lagged; that is, their value at each observation is remembered, and previous values can be referred to by the lagging functions. Other classes have only a single value ...
Charles O. Crawford, Functions of Independent Variables in Research and Program Planning, Public Health Reports (1896-1970), Vol. 84, No. 9 (Sep., 1969), pp. 831-834 ...
Missing Values Missing values for variables in programming statements are treated in the same way that missing values are treated in the DATA step; that is, missing values used in expressions ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback