A survey of a random sample of 10 office product purchasing managers from service companies provided data on the annual amount of office supply purchases (excluding office furniture and computer equipment). Here is the report obtained:

Montant annuel Moyenne 4555.8 Erreur-type Mediane 5068.5 Mode #N/A Ecart-type Variance de l'echantillon 1598405.96 Kurstosis (Coefficient d'aplatissement) 1.280 Coefficient d'asymetrie -1.330 Plage 4120 Minimum 1800 Maximum 5920 Somme Nombre d'echantillons 10 Niveau de confiance(90,0%)