$vcentername = "vcentername"
$clustername = "clustername"
$stattype = "cpu.ready.summation" 

 Connect-VIServer $vcentername
$cluster = Get-Cluster -name $clustername
$vms = Get-VM -Location $cluster | ?{$_.PowerState -eq "PoweredOn"}
$stats = Get-Stat -Realtime -Entity $vms -Stat $stattype

$alltotals = $stats | Measure-Object -Property Value -Minimum -Average -Maximum -Sum
$max = $alltotals.Maximum 
$min = $alltotals.Minimum
$ave = [Math]::Round($alltotals.Average , 2)

$range1 = ($stats | ?{$_.Value -lt 24}).count
$range2 = ($stats | ?{$_.Value -gt 25 -and $_.Value -lt 74}).count
$range3 = ($stats | ?{$_.Value -gt 75 -and $_.Value -lt 149}).count
$range4 = ($stats | ?{$_.Value -gt 150 -and $_.Value -lt 249}).count
$range5 = ($stats | ?{$_.Value -gt 250 -and $_.Value -lt 374}).count
$range6 = ($stats | ?{$_.Value -gt 375 -and $_.Value -lt 524}).count
$range7 = ($stats | ?{$_.Value -gt 525 -and $_.Value -lt 699}).count
$range8 = ($stats | ?{$_.Value -gt 700 -and $_.Value -lt 899}).count
$range9 = ($stats | ?{$_.Value -gt 900 -and $_.Value -lt 1124}).count
$range10 = ($stats | ?{$_.Value -gt 1125 -and $_.Value -lt 1374}).count
$range11 = ($stats | ?{$_.Value -gt 1375 -and $_.Value -lt 1649}).count
$range12 = ($stats | ?{$_.Value -gt 1650 -and $_.Value -lt 1949}).count
$range13 = ($stats | ?{$_.Value -gt 1950 -and $_.Value -lt 2274}).count
$range14 = ($stats | ?{$_.Value -gt 2275}).count

Write-Host "min: $min"
Write-Host "ave: $ave"
Write-Host "max: $max"

Write-Host "24:      $range1"
Write-Host "25-74:     $range2"
Write-Host "75-149:    $range3"
Write-Host "150-249:   $range4"
Write-Host "250-374:   $range5"
Write-Host "375-524:   $range6"
Write-Host "525-699:   $range7"
Write-Host "700-899:   $range8"
Write-Host "900-1124:  $range9"
Write-Host "1125-1374: $range10"
Write-Host "1375-1649: $range11"
Write-Host "1650-1949: $range12"
Write-Host "1950-2274: $range13"
Write-Host "2275>:     $range14"