datastats

Data statistics

Syntax

xds = datastats(x) [xds,yds] = datastats(x,y)

Description

xds = datastats(x) returns statistics for the column vector x to the structure xds. Fields in xds are listed in the table below.

Field	Description
`num`	The number of data values
`max`	The maximum data value
`min`	The minimum data value
`mean`	The mean value of the data
`median`	The median value of the data
`range`	The range of the data
`std`	The standard deviation of the data

[xds,yds] = datastats(x,y) returns statistics for the column vectors x and y to the structures xds and yds, respectively. xds and yds contain the fields listed in the table above. x and y must be of the same size.

Examples

Compute statistics for the census data in census.mat:

load census
[xds,yds] = datastats(cdate,pop)
xds = 
       num: 21
       max: 1990
       min: 1790
      mean: 1890
    median: 1890
     range: 200
       std: 62.048
yds = 
       num: 21
       max: 248.7
       min: 3.9
      mean: 85.729
    median: 62.9
     range: 244.8
       std: 78.601

Tips

If x or y contains complex values, only the real parts are used in computing the statistics. Data containing Inf or NaN are processed using the usual MATLAB^® rules.

Version History

Introduced before R2006a