Using Workbench Command

WEIGHTED STATISTICS ALONG CIFTI COLUMNS
   wb_command -cifti-weighted-stats
      <cifti-in> - the input cifti

      [-spatial-weights] - use vertex area and voxel volume as weights

         [-left-area-surf] - use a surface for left vertex areas
            <left-surf> - the left surface to use, areas are in mm^2

         [-right-area-surf] - use a surface for right vertex areas
            <right-surf> - the right surface to use, areas are in mm^2

         [-cerebellum-area-surf] - use a surface for cerebellum vertex areas
            <cerebellum-surf> - the cerebellum surface to use, areas are in
               mm^2

         [-left-area-metric] - use a metric file for left vertex areas
            <left-metric> - metric file containing left vertex areas

         [-right-area-metric] - use a metric file for right vertex areas
            <right-metric> - metric file containing right vertex areas

         [-cerebellum-area-metric] - use a metric file for cerebellum vertex
            areas
            <cerebellum-metric> - metric file containing cerebellum vertex
               areas

      [-cifti-weights] - use a cifti file containing weights
         <weight-cifti> - the weights to use, as a cifti file

      [-column] - only display output for one column
         <column> - the column to use (1-based)

      [-roi] - only consider data inside an roi
         <roi-cifti> - the roi, as a cifti file

         [-match-maps] - each column of input uses the corresponding column
            from the roi file

      [-mean] - compute weighted mean

      [-stdev] - compute weighted standard deviation

         [-sample] - estimate population stdev from the sample

      [-percentile] - compute weighted percentile
         <percent> - the percentile to find, must be between 0 and 100

      [-sum] - compute weighted sum

      [-show-map-name] - print map index and name before each output

      If the mapping along column is brain models, for each column of the
      input, the specified operation is done on each surface and across all
      voxels, and the results are printed on separate lines.  For other mapping
      types, the operation is done on each column, and one line per map is
      printed.  Exactly one of -spatial-weights or -cifti-weights must be
      specified.  Use -column to only give output for a single column.  If the
      -roi option is used without -match-maps, then each line will contain as
      many numbers as there are maps in the ROI file, separated by tab
      characters.  Exactly one of -mean, -stdev, -percentile or -sum must be
      specified.

      Using -sum with -spatial-weights (or with -cifti-weights and a cifti
      containing weights of similar meaning) is equivalent to integrating with
      respect to area and volume.  When the input is binary ROIs, this will
      therefore output the area or volume of each ROI.