Removes all elements from the vectors listed.

In Resampling Stats, only one vector was allowed as an argument to this command. Statistics101 allows any number of vectors to be cleared with one command.

This command is most often used to clear a scoring vector (a vector created by the SCORE command) at the end of a nested loop so that the score will start from scratch on the next cycle through the outer loop. See the example at right.

COPY 1,10 var
PRINT var
CLEAR var
PRINT var

The above program produces the following output:

var: (1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0)
var: ()

The following program shows a typical use of the CLEAR command to clear a scoring vector before the next round of a loop:

'This calculates the probability that you will
'get exactly 4 heads in a row out of 5 coin
'flips. 
' The calculated answer is 1/16 or 0.0625.
'
COPY 10000 rptCount
REPEAT 1000
   REPEAT rptCount
      GENERATE 5 0,1 flips
      RUNS flips = 4 runFound
      IF runFound = 1
         SUM flips runSum
         IF runSum = 4
            SCORE runFound scrboard
         END
      END
   END
   SUM scrboard successes
   DIVIDE successes rptCount prob
   SCORE prob probs
   CLEAR scrboard   'Make ready for next round.
END
HISTOGRAM probs
MEAN probs mean
PRINT mean