<stx:transform version="1.0" 
  xmlns:stx="http://stx.sourceforge.net/2002/ns"
  strip-space="yes">

  <stx:template match="/root">
    <node>
      <stx:variable name="seq1" select="('2', 5, 3.8, -1)"/>
      <stx:value-of select="sum($seq1)"/>
      <stx:text>:</stx:text>
      <stx:value-of select="sum(())"/>
      <stx:text>/</stx:text>
      <stx:value-of select="avg($seq1)"/>
      <stx:text>:</stx:text>
      <stx:value-of select="avg(())"/>
      <stx:text>/</stx:text>
      <stx:value-of select="min($seq1)"/>
      <stx:text>:</stx:text>
      <stx:value-of select="min((1,2,3))"/>
      <stx:text>/</stx:text>
      <stx:value-of select="max($seq1)"/>
      <stx:text>:</stx:text>
      <stx:value-of select="max((10,100,1))"/>
    </node>
  </stx:template>

</stx:transform>