Column statistics, such as mean for only selected rows.
Hi. I qould like to have a jsl command to find either column mean, median, or sigma for the height column, but only where age is only 12 and 13. I tried select rows, but I dont seem to get the correct result. If i use or not use the select rows, it still gives me the same numbers. Data Table( "table" ) << Select where( :age== { 12, 13 });
Sigma = Col Std Dev( As Column( "age" ) );
median = Col
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