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- Compute Column Mean while restricting observations used

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Dec 12, 2014 5:16 AM
(4753 views)

Hello,

I want to get a column mean into a new column but I want to be able to restrict the date range that I use. I want to be able to say get column mean from day x to day y in my formula. This is the current formula that i have:

New Column ("X",

Numeric,

Continuous,

Format ("Best", 12),

Formula (Col Mean (:WeeklyPercent, :Week, :Source)), Set Selected);

It pull the average weekly percent by week and source of the data which is perfect, however, even when I put a data filter on the dataset it still pulls the mean for the entire data set by those two by variables. I want to be able to change the date range that those column means are from. Can anyone help me with that?

Thanks.

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Dec 19, 2014 11:45 AM
(7541 views)

The column functions operate on the whole table, ignoring selection and exclusions. However, you can make a formula column that's dependent on the row state and use that column as a BY variable.

New Column( "mysel", Formula( Selected( Row State() ) ) );

New Column( "meany", Formula( Col Mean( :y, :mysel) ) );

If you're using the global data filter with selection turned on, the Column Means will be recomputed whenever the selection changes.

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Dec 19, 2014 11:45 AM
(7542 views)

The column functions operate on the whole table, ignoring selection and exclusions. However, you can make a formula column that's dependent on the row state and use that column as a BY variable.

New Column( "mysel", Formula( Selected( Row State() ) ) );

New Column( "meany", Formula( Col Mean( :y, :mysel) ) );

If you're using the global data filter with selection turned on, the Column Means will be recomputed whenever the selection changes.