science-statistics: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/bin/science-statistics - from package: science-statistics

You may install the required package with command apt-get install {package}

Error in other languages:
science-statistics: bevel nie gevind nie
science-statistics: comandă negăsită
science-statistics: comando não encontrado
science-statistics: commande introuvable
science-statistics: command not found
science-statistics: käsku ei ole
science-statistics: không tìm thấy lệnh
science-statistics: komanda nerasta
science-statistics: Kommando nicht gefunden.
science-statistics: kommandot finns inte
science-statistics: komut yok
science-statistics: nie znaleziono polecenia
science-statistics: níor aimsíodh an t-ordú
science-statistics: no se encontró la orden
science-statistics: no s'ha trobat l'ordre
science-statistics: opdracht niet gevonden
science-statistics: parancs nem található
science-statistics: perintah tidak ditemukan
science-statistics: príkaz nenájdený
science-statistics: příkaz nenalezen
science-statistics: команда не найдена
science-statistics: командата не е открита
science-statistics: 命令找不到
science-statistics: コマンドが見つかりません