One way to get column stats is with summarize(): dt = Open("$ENGLISH_SAMPLE_DATA/Big Class.jmp"); //Get column stats summarize( sigma=StdDev(:height), avg = mean(:height) ); siglow = avg - 3 * sigma; sighigh = avg + 3 * sigma; //make distribution Distribution( Continuous Distribution( Column( :height ), Count Axis( 1 ) ), SendToReport( Dispatch( {"height"}, "1", ScaleBox, { Min( 45 ), Max( 78), Inc( 5 ),Minor Ticks( 1 ), Add Ref Line( eval(siglow), Dotted, "Black","-3sd" ), Add Ref Line( eval(sighigh), Dotted, "Black","+3sd" ) } ) ) );
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